No, sea mammals give birth to live young.
If you mean mammals platypus are the only mammals that lay eggs!!
Sea Lions are mammals, and birth live young. They do not lay eggs.
No. Rabbits do not lay eggs. They are placental mammals. The only mammals which lay eggs are the monotremes, which include the platypus and the echidna.
Jaguars are mammals. Mammals do not lay eggs.
No, they're mammals. Mammals don't lay eggs (except for monotremes).
Elephants are mammals Mammals don't lay eggs
Cougars are mammals. Mammals do not lay eggs. They have a live birth.
Porcupines are mammals and do not lay eggs
Elephants are mammals, and do not lay eggs.
No. Agouti are small mammals, and the only mammals which lay eggs are platypuses and echidnas.
No, they're mammals. Mammals don't lay eggs (except for monotremes).
Sea Otters give live birth to their young like all mammals. Except for the Platypus, he lays eggs.