Mammals

68% of animals are nocturnal, but the other 32% aren't.

Argentina does not have a national mammal. The national animal of Argentina is the Hornero bird species. The national motto is Argentina is En union y libertad.

All members of the weasel family (Mustelidae), and especially those in the otter subfamily (Lutrinae). There are about 17 different species of otters (subfamily Lutrinae) in about seven genera, but the sea otter is the only member of genus Enhydra (species Enhydra lutris). See the following: http://en.wikipedia.org/wiki/Sea_otter http://en.wikipedia.org/wiki/Lutrinae http://en.wikipedia.org/wiki/Mustelidae

Nutria do not hibernate

A ruminant is an herbivorous mammal that has two stomachs. After chewing food, usually grass, they swallow it and it ferments in the first stomach. Then they regurgitate the food, which is now called cud, and chew it a second time, before swallowing it again, at which point the cud moves to the second stomach, where digestion continues. Most ruminants belong to the order Ruminantia, but not all of them do.

The only mammals which lay eggs are the monotremes. These include the platypus and the two species of echidna, the short-beaked echidna of Australia and the long-beaked echidna of New Guinea.

In the case of the platypus, the eggs are about 11 - 15 mm in size, or about the size of a grape. Interestingly, only the left ovary is functional. Also, while the mother produces milk, she does not have teats.

The echidna lays eggs which are about the same size.

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its just like saying how does a thicker wooly jumper keep you warm there is not really any other way to explain it

Approximately 5,060. An exact value cannot be given because there are so many species that one person regards as a full species while another person regards as a subspecies.

No, not all mammals are placental. There are two other groups of mammals: the monotremes and the marsupials.Monotremes are egg-laying mammals, and marsupials are generally pouched mammals, although not all marsupials have fully developed pouches.

Yes, wildebeeste do migrate. In fact, one of the most famous migrations in the world is the wildebeeste migration across the Serengeti plains in Africa. It is a very treacherous trek with lions hunting them and crocodiles taking them out whenever they cross rivers. It is quite spectacular on film.

no. humans are mammals and do not have hooves.

If you go just outside the Boston Harbor area you can find Humpback, Finback, and Minke whales. These are the types of whales you commonly see on the Boston Harbor whale watch cruises in addition to dolphins.

The time to watch is seasonal. From Jan to May you can see whales within the Cape Cod Bay area and after that better chances are further out to sea or towards the mid-atlantic or south-eastern coast.

For details you can check out the website (sponsored by the New England Aquarium) for the Boston Habor whale watch cruises.

Pets are pricey so make sure you have figured the costs before you get one. PetProductsByRoyal.com has some great cages for ferrets.

Any animal that must eat plants to live is called an 'Herbivore'.

Yes, there are two. One is the platypus, and the other is the echidna, sometimes called the spiny anteater, although it is not even remotely related to anteaters. Egg-laying mammals are known as monotremes.

No fish are mammals. Mammals are vertebrate animals that nurse their young. Mammals have many characteristics in common such as being warm-blooded, having some hair or fur, and being tetrapods (having four limbs, although in marine mammals these are fins).

I'd say no. It has never been done before. Cats normally live to be 9-15. If a cat were 100 in human years than in cat years they would be about 420 years old, which is not even possible for a human.

Animals such as cats (foolish ones only!), squirrels, leopards and koalas.

They live on land, can't hold for too long under water except for some animals.

I’ve always said pescaavatarian because ava is the root for birds (ex. aviator). Other than birds or fish, people barely eat other animals, but technically you’d have to include those too (alligators, frog legs). I myself am a pescaavatarian.

a platypus is a mammal even though it doesn't give live birth. I'm not sure why.

Yes, some sharks do have their young in this way, it is called viviparity. Some sharks maintain a placental link to the developing young which is similar to mammalian gestation. The young are born alive and fully functional. The hammerheads, the bull and the blue sharks are viviparous.

All of the aforementioned animals are warm-blooded vertebrates with four -chambered hearts. All have a body covering of hair or fur and specialized teeth. All feed milk to their young produced in the mammary glands of the female. All of these points are characteristics of mammals.

Yes, all insects are invertebrates. To be a vertebrate means to have a backbone. Insects have an exoskeleton, meaning a sort of protective shell around the outside of their body. They have no "bones" within their body. So, yellow jackets, and all other insects, are invertebrates or without backbones.