Mammals

No, birds and other reptiles like crocodiles also breathe air. Insects absorb air through their skin.

Here's a list... pangolins, squirrels, beavers, pocket gophers, kangaroo rats, pocket mice, kangaroo mice, jumping mice, birch mice, jerboas, mice, rats, scaly-tailed squirrels, springhare, gundis, dormice, dassie rat, cane rats, african mole-rats, old world porcupines, new world porcupines, viscachas, chinchillas, pacarana, cavies, maras, capybara, agoutis, pacas, tuco-tucos, octodonts, chinchilla rats, spiny rats, hutias, coypu, rabbits, pikas, hares, sengis

None. All mammals have some hair, even if it looks like they do not.

a lemming goes to sleep as soon as it gets dark and wakes up as soon as the sun rises. the lemming uses the sun to tell the time.

A web footed animal is an animal that has webbed feet like a duck, goose, or a Flamingo. Many birds have webbed feet. Frogs and some Salamanders do too.

The biggest mammal in the world is the blue whale and is and endangered species. The second biggest mammal in the world is the hump-back whale which is also an endangered species. Hope this helps

Yes, a wombat is a mammal

A misnomer posed by some earlier poster is that it is like a reptile. The correct answer is, it is not considered the most primitive mammal. This was incorrectly presumed by 19th century scientists. It is actually uniquely evolved.

If you're attempting to find out the most primitive "modern" mammals, they could be argued to be the Soricidae, the shrews and the Talpidae, the moles, but any modern creature is simply not primitive. More basic, more complex, more or less evolutionary divergent from their ancestral norms, but not more primitive.

because unlike mammals they are fed on milk and of course they are warm blooded therfore they need more enery they need more energy to keep their body temperature higher im not intierly sure

This was incorrectly presumed, by 19th century scientists, to be platypus. It is actually uniquely evolved.

If you're attempting to find out the most primitive "modern" mammals, they could be argued to be the Soricidae, the shrews and the Talpidae, the moles, but any modern creature is simply not primitive. More basic, more complex, more or less evolutionary divergent from their ancestral norms, but not more primitive.

it occurs in the blood and just do some research!!

Brain, Thorax, Abdomen, heart

Both snail and turtle are not mammals. The answer is sloth.

Mammals, whether aquatic or land, have a number of characteristics in common. * they are warm-blooded * they breathe using lungs (not gills) * they have skin, fur or hair * their young suckle from the mother * with the exception of monotremes, they bear live young

Actually, the skunk is a species all to itself. Ways to categorize the species of the skunk would be a mammal or vertebrate. Contrary to popular belief, the skunk is actually not a rodent. The skunk's family is Mephitidae and the skunk's order is Carnivora.

The only mammal capable of free flight is the bat. There are many glider species, such as the sugar glider, pygmy possum, greater glider, etc, which do not fly. They are equipped with membranes extending from their "wrists" to their "ankles" which extend and enable the glider to glide between tree tops.

Internal fertilization with internal development

There are some animals that have evolved to not have a gallbladder - the horse is probably the most commonly encountered of these animals. The horse doesn't need a gallbladder - the function of the gallbladder is to store up bile between meals for digestion after the consumption of a meal. As horses have evolved to graze and eat almost constantly throughout the day, they don't have "meals" for the gallbladder to store up bile between and they evolved to not havea gallbladder.

Echolocation is the ability certain animals have to use sounds to navigate. They make sound and by hearing where it "bounces" from (hence the "echo") they are able to tell where something is located.

I think it's because birds need a very fast metabolism to produce enough energy to fly, and a higher body temperature will cause chemical reactions to happen more quickly. The difference isn't that big. Placental mammals (most mammals) have a typical body temperature of about 99 degress F/37 degrees C, and birds have a typical body temperature of about 105 degrees F/41 degrees C.

A Jackdaw is bird form the Crow family.

most common insects that undergo metamorphosis are the butterflies and moths.

Kingdom: Animalia (Animal)

Phyla: Chordata (Vertebrate)

Class: Mammalia (Mammal)

Order: Carnivora (Carnivore)

Family: Canidae (Canids)

Genus: Canis (Canids)

Species: Canis Lupus (Wolf)

Sub-Species: Canis Lupis Familiaris (Domestic Dog)

no, they are insects. insects have an exoskeleton and are thus not vertebrates.

external fertilization