The foot: What is the difference between the foot of the Chimpanzee, Gorilla, and Orangutan?

What is the difference between the foot of the Chimpanzee (Pan troglodytes), Gorilla (Gorilla gorilla), and Orangutan (Pongo pygmaeus)?

The Chimpanzee, Gorilla, and Orangutan are primates with five digits on each foot (five toes) with keratin toe nails. Humans also have five digits on each foot with keratin toe nails.

The Gorilla has shorter, wider digits than the Chimpanzee and Orangutan.

The Chimpanzee, Gorilla, and Orangutan have prehensile (grasping) feet. Humans do not have prehensile feet (their feet cannot easily grasp objects).

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The hand: What is the difference between the hand of the Chimpanzee, Gorilla, and Orangutan?

What is the difference between the hand of the Chimpanzee (Pan troglodytes), Gorilla (Gorilla gorilla), and Orangutan (Pongo pygmaeus)?

The Chimpanzee, Gorilla, and Orangutan are primates with five digits on each hand (four fingers and one thumb) with keratin fingernails. Humans also have five digits on each hand (four fingers and one thumb) with keratin fingernails.

The Gorilla has shorter, wider digits than the Chimpanzee and Orangutan.

The Gorilla has a wider palm than the Chimpanzee and Orangutan.

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How does a cat sharpen its claws?

How does a cat sharpen its claws?

Human fingernails and cat claws are made from keratin and keep growing their whole life.

Human fingernails do not retract (go in and out) – they do not go back into the skin to make them invisible. 

Most cats and wild cats have claws that are exposed or protracted when they use them and are hidden, sheathed, or retracted when they don’t need them. 

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Blue Lamb

The Blue Sheep (Pseudois nayaur) is a medium-sized ungulate (hoofed) mammal. It is also called the Bharal or the Himalayan Blue Sheep. It is a caprid. It is native to the Himalayan mountains in India, Nepal, Bhutan, Tibet, and Pakistan.

The female is pregnant for 5 months, before giving birth to one live young. The young, called a lamb, has grey-brown fur. When it is an adult, it gets its blue-grey fur. 

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Marine Animal

What is a marine animal?

A marine animal is any animal (and bird) that lives in and around the ocean and its waters (saltwater). 

A marine animal can have gills (to breathe air when they are underwater) or lungs (to breathe air at the surface of the water). 

A marine animal can have fins or be finless. It can live in the middle of the ocean or on the bottom of the sea. It can fly and live around ocean coasts. 

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Instar

What is an instar?

An instar is the development stage of an insect between each stage of moulting, or shedding its skin. 

For example, each stage from egg to larvae (grub) to pupa (chrysalis or cocoon) to an adult insect, as an insect undergoes metamorphosis, is called an instar.

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