bats
None. All mammals have bones. There is only one fish that is composed of cartilage and no bones, and they are the different species of sharks.
You can't. Only female mammals - and cats are mammals - have the required body parts to get pregnant.
only mammals body have the same type of body but not the desighn
There are mammals that are truly ectothermic. However the naked mole-rat does not regulate its body temperature in typical mammalian fashion and unlike other mammals its body temperature tracks ambient temperatures.
Mammals are vertebrates and like all vertebrates have only one back bone . Back bone is made up of vertebrae .
Only mammals nurse their babies.
Only mammals grow hair on their body. No other animals grow hair.
Yes, mammals are the only animals with hair, or at least, the only ones with the kind of hair that you are thinking of. Mammals have a particular kind of hair, which is made out of a protein called keratin. There are other animals who have other kinds of hair. Insects have their own kind of hairs, which are sensory rather than protective in nature, and they are made of a different protein known as chitin.
no thay are fish Only mammals have nipples
No. Birds are not mammals.
They are mammals that only eat plants.
The several species of bats are the only mammals truly able to fly. As a mammal, fertilisation is internal.