What makes you a mammal?
Hair and milk.
some have back bones and the others dont
they have special pouches that they/ carry their babies in. Mammals like these are called marsupials.
Vertebrates are just that vertebrates, that ALL have a backbone, fish, mammals, amphibians, reptiles, birds, marsupials, primates, rodents... etc.
All mammals including woolly mammals are different from other vertebrates in possession of hair ,wool is also type of hair .
Mammals, a branch of vertebrates, possess hair and mammary glands. No other vertebrates do.
Dolphins are mammals. Sharks are fish. They are very different, though both are vertebrates.
Elks are vertebrates. An invertebrate has no backbone like a snail.
they are warm blooded
Bats can fly.
Its fur
Yes, an emu is a vertebrate as are all other birds. They have an internal skeleton and a backbone which makes them vertebrates. All mammals, reptiles, amphibians and fish (true fish) are also vertebrates.