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Grey bamboo lemur

The grey bamboo lemur is also called the grey gentle lemur, or the eastern lesser bamboo lemur. This is the smallest of the bamboo lemurs. It lives mostly in bamboo forests in eastern Madagascar. It is normally active at dusk, eating bamboo leave ...

                                               

Groundhog

The groundhog is a rodent. It belongs to the group of ground squirrels. Those squirrels are also known as marmots. The animal may also be called woodchuck, or whistlepig. Groundhogs dig tunnels and live underground. Groundhog holes, called burrow ...

                                               

Grouper

Groupers are large fish of the perch type. They are genera in the subfamily Epinephelinae. Groupers and the sea basses are in the family Serranidae. Most groupers are in one of two large genera: Epinephelus and Mycteroperca. Also, species in the ...

                                               

Growling grass frog

The growling grass frog, green and gold frog, blue-thighed tree frog, southern bell frog, warty bell frog or green and golden frog is a tree frog from Australia. It lives in South Australia, New South Wales and Victoria. It also lives in Tasmania ...

                                               

Growth factor

A growth factor is something in the body that allows or deny cells to grow. These factors are normally made up of cell hormones or other proteins within the body. All growth factors occur naturally within cells and are necessary for the cell life ...

                                               

Growth hormone

Growth hormone, also known as somatotropin or somatropin, is a hormone responsible for growth, cell reproduction and regeneration in humans and other animals. It is specific only to certain kinds of cells.

                                               

Gruiformes

The Gruiformes are an order with many living and extinct bird families, and a widespread geographical diversity. Gruiform means "crane-like". The Gruiformes evolved early, long before the passerine songbirds which are the most common birds today. ...

                                               

Guanaco

When a member of the herd picks up the slightest hint of danger, it makes a high-pitched warning call, causing the other guanacos to flee swiftly and nimbly across the steep and uneven terrain.

                                               

Guineafowl

The Guineafowl are a family of birds. It is in the same order as the pheasants, turkeys and other game birds. Guineafowl are native to the dry arid areas of Africa. They are now bred for meat especially in India.

                                               

Gun dog

Gun dogs or gundogs, also called bird dogs, are types of dogs used to assist hunters in finding and retrieving game, usually birds. Gundogs are divided into three primary types: retrievers, flushing dogs, and pointing breeds. Flushing dogs flush ...

                                               

Gymnosperm

The gymnosperms are a group of seed plants which includes conifers, cycads, Ginkgo and Gnetales. They have naked seeds, in contrast to the seeds or ovules of flowering plants angiosperms which are enclosed during pollination. Gymnosperm seeds dev ...

                                               

Gymnotiformes

The Gymnotiformes is a lineage of electric fishes. Common names include the Neotropical electric fishes, South American electric fishes, or American knifefishes. They are primarily freshwater inhabitants. They have organs adapted to the generatio ...

                                               

Haasts eagle

Haasts eagle was the largest known eagle. It is the only eagle in the world known to have been the top predator in its ecosystem. It lived on the South Island of New Zealand, where there were no other large predators. Fossil evidence shows that t ...

                                               

Haemolymph

Haemolymph is a blood-like fluid in the circulatory system of insects and other Arthropods. Molluscs also have a similar circulatory system. Insects and their relatives use a molecule called haemocyanin, which does the same job as haemoglobin doe ...

                                               

Haflinger

Haflinger is an all-round breed of horse. It is a mountain horse but today people use it for spare time. A Haflinger counts as a pony breed of horse. The first cloned horse, Prometea is of this breed. A Haflinger has a gallant dry head with big e ...

                                               

Hand

A hand is the part of the body at the end of an arm. Most humans have two hands. Each hand usually has four fingers and a thumb. On the inside of the hand is the palm. The five bones inside this part of the hand are called metacarpals. The wrist ...

                                               

Haplodiploidy

Haplodiploidy is a sex determination system in which males develop from unfertilized eggs and are haploid, and females develop from fertilized eggs and are diploid. Haplodiploidy determines the sex in all members of the insect order Hymenoptera, ...

                                               

Haplorhini

The haplorhines, the "dry-nosed" primates, are members of the Haplorhini clade: the prosimian tarsiers and all of the true simians. The simians are the catarrhines and the platyrrhines.

                                               

Harlequin duck

The harlequin duck, also known as the painted duck, totem pole duck, rock duck, glacier duck, mountain duck, white-eyed diver, squeaker and blue streak, is a duck that lives in the sea. The female is plain, but the male has white markings. This i ...

                                               

Harpy eagle

The harpy eagle is one of the largest eagles and most powerful birds of prey in the world. It is a magnificent meat-eater that lives in Central and South American rainforests. It is colored black and white. This large eagle makes whistling and cl ...

                                               

Hawksbill sea turtle

The hawksbill sea turtle or hawksbill turtle is an endangered species of turtle. It is mostly seen in shallow lagoons and coral reefs where its food is. It is smaller than the Australian flatback turtle: it is usually a little more than two feet ...

                                               

Head

The head is the part of the body where the brain is. It is also where the face is. Different things may be worn on the head, for example a headband or a hat. Some people get pains in their head occasionally, known as headaches. Also, some people ...

                                               

Hearing

Hearing is one of the five senses. Ears detect vibrations in the air. These vibrations are sounds. Most animals can hear. Most land vertebrates hear through ears. Fish hear in several different ways. Many use their swim bladder to hear, and many ...

                                               

Heart failure

Heart failure is when the heart cannot pump blood well. Heart failure is different from cardiac arrest, because the heart is still working. Heart failure can be sudden, like after a heart attack, or can come on slowly. Someone with heart failure ...

                                               

Hedgehog

For the fictional character, see Sonic the Hedgehog A hedgehog, also called a hedgepig or furze-pig, is a small mammal. It has between 5000-7000 spines on its back. There are hedgehogs in Europe, Asia, Africa, and New Zealand. When attacked or th ...

                                               

Heliotropium

Heliotropium ellipticum Heliotropium argenteum Heliotropium paniculatum R.Br. Heliotropium glabellum R.Br. Heliotropium kuriense Heliotropium nigricans Heliotropium curassavicum L. Heliotropium chenopodiaceum A.DC. Clos. Heliotropium claussenii D ...

                                               

Hepatocellular carcinoma

Hepatocellular carcinoma is the most frequently encountered type of liver cancer. It is more common in those with cirrhosis of the liver. If localized to the liver and small at the time of diagnosis, it can be surgically treated. If metastatic, i ...

                                               

Hermanns tortoises

The Hermanns tortoise is a small to medium size species of tortoise. They are native to southern Europe. They also live in nearby islands in the Mediterranean Sea. Their range is from Romania and Greece to southern Spain. About 25% of them live o ...

                                               

Herpetology

Herpetology is the branch of zoology concerned with reptiles and amphibians. It is about cold-blooded animals like salamanders, frogs, toads, snakes, lizards, turtles, tuataras and crocodilians.

                                               

Herring

A herring is a small teleost fish of the genus Cluptea. Best-known of this family is probably the Atlantic Herring. There are 15 different species of herring. When herrings migrate in the water they usually do this in large numbers; this is then ...

                                               

Hesperocallis

Hesperocallis is a genus of flowering plants that includes a single species, Hesperocallis undulata, the desert lily, found in the desert areas of the southwest of North America. Hesperocallis has traditionally been classified in Liliaceae but un ...

                                               

Hesperornithoides

A phylogenetic analysis was presented in an abstract in the Journal of Vertebrate Paleontology in 2005. The analysis decided the specimen was a close relative of Sinornithoides.

                                               

Heterosexuality

Heterosexual people love people of the opposite gender. A heterosexual man loves women. A heterosexual woman loves men. Another less formal word for heterosexual is straight. People who are not heterosexual may be homosexual, bisexual or asexual. ...

                                               

Hibernation

Hibernation is a time of inactivity. Some endothermic animals hibernate, usually during the winter, when food is short. They fall into a sleep-like state. They regulate their metabolism to consume less energy. They lower their body temperature, s ...

                                               

Hidden-ear frog

The hidden-ear frog or earless water-holding frog is a frog from Australia. It lives in the Kimberly region in the Ord and Fitzroy Valleys. It lives in Western Australia and small parts of Queensland and the Northern Territory. The adult male fro ...

                                               

Himalayan Persian

The Himalayan Persian, is a breed or sub-breed of long-haired cat identical in type to the Persian, with the exception of its blue eyes and its point colouration, which were derived from crossing the Persian with the Siamese. Some registries may ...

                                               

Hispaniolan solenodon

The Hispaniolan solenodon is a type of solenodon. It is only found on Hispaniola. It is also called the Haitian solenodon, or agouta.

                                               

Hoja santa

Hoja santa is a herb with a heart-shaped velvety leaf. The name hoja santa means "sacred leaf" in Spanish language. It is also known as yerba santa, hierba santa, Mexican pepperleaf, root beer plant, and sacred pepper.

                                               

Hominin

Hominini is the tribe of african apes that comprises humans, and all ancestors of Homo sapiens back to the split from the apes. This branching is now dated at five to eight million years ago, with Sahelanthropus as a key fossil. A less frequent u ...

                                               

Homo antecessor

Homo antecessor is an extinct human species dating from 1.2 million to 800.000 years ago, that was discovered by Eudald Carbonell, Juan Luis Arsuaga and J. M. Bermudez de Castro. H. antecessor is one of the earliest known human varieties in Europ ...

                                               

Homo cepranensis

Homo cepranensis is a proposed name for a human species, known from only one skull cap discovered in 1994. The fossil was discovered by archeologist Italo Biddittu and was nicknamed "Ceprano Man" after a nearby town in the province of Frosinone, ...

                                               

Hooded pitohui

The hooded pitohui, is a songbird of New Guinea with black and orange plumage. This species and its two close relatives, the variable pitohui and the brown pitohui, were the first known poisonous birds. A neurotoxin found in the birds skin and fe ...

                                               

Hoopoe

The hoopoe, is a colourful bird that is found across Afro-Eurasia, notable for its distinctive crown of feathers. It is the only living species in the family Upupidae. One insular species, the giant hoopoe of Saint Helena, is recently extinct, an ...

                                               

Hornbill

The hornbills are a family of bird found in tropical and subtropical Africa, Asia and Melanesia. They have a long, down-curved bill which is often brightly colored and sometimes has a box-like thing on the upper mandible. Many states of India lik ...

                                               

Horned owl

Bubo is a genus of large owls. It includes the eagle-owls and the horned owls. This genus contains about one or two dozen species of typical owls and is found in many parts of the world. Some of the largest living Strigiformes are in Bubo. Tradit ...

                                               

Horse chestnut

The other kind of chestnut is called sweet chestnut. It is not related to this tree A horse chestnut, also known as the horse-chestnut, buckeye, conker tree, or Spanish chestnut, is a large deciduous tree. It is native to southern Europe, in the ...

                                               

Horseshoe bat

Rhinolophidae is a family of bats commonly known as horseshoe bats. There is also an extinct genus of bats, Palaeonycteris. Horseshoe bats are closely related to the Hipposideridae. Horseshoe bats are divided into six subgenera and many species g ...

                                               

House centipede

The house centipede is a yellowish grey centipede having up to 15 pairs of legs. The species are found all across the world and live in human apartments or houses. The house centipede is an insectivore; it kills and eats arachnids and insects. Th ...

                                               

Hovenia dulcis

The oriental raisin tree grows about 10 meters tall. Its bark of the tree is dark gray. Its flowers are white, and they open between June and July. The tree grows fruit in September and October. The fruits are brown, and they are shaped like a ch ...

                                               

Humboldt penguin

The Humboldt penguin has a plain white belly. It can have a few pure black spots on its belly and have orange with an hint of green. There are less than 10.000 Humboldt penguins in the wild. They are found in Chile and Peru. They drink sea water ...