I don't think there is any that does not give birth.
Bat
they give birth to young ones.
Yes, it is a mammal.
A Platypus!
Yes, the hippo is a mammal. Hippos give birth to live young and suckle their young, typical of mammals.
yes cat are in the mammal catogory they give birth to living kittins and give milk to their young. :)
yes,because its a mammal
yes, because it is a mammal
humming bird
Mammals give birth to live young, ie babies of their species.
they give birth to live young and produce milk