naturia
Naturia.
No, a fish is not a mammal. Only a mammal has a backbone.
Yes a monotreme does have a backbone because it is a type of mammal and a mammal is a vertebrate.
An elephant is a mammal, and has a backbone, so is a vertebrate.
Yes, a manatee is a mammal and has a backbone.
Yes. A tiger is a mammal and has a backbone.
mammal
Yes it does. It is a mammal and all mammals have a backbone.
A bird. Birds feed their young food they find. I believe that any animal that is not a mammal does not have nipples.
It's a whale, which is a mammal, which is a vertebrate, which are animals with a backbone.
Every mammal has nipples. It is through the nipples that newborn mammals access the milk their mothers produce for them (the perfect food for a newborn mammal).
Not all male mammals have nipples. I believe mice, rats, and horses are examples of mammals where the males do not have nipples. In fact, the platypus is a mammal, but it has pores and no nipples. Why this is, I do not know. I am trying to find out, but the information seems to be hard to come by.