Depends on what you mean by "biggest", but, no.
Plenty of animals that are heavier and wider.
But measured from the ground and up, giraffes are the tallest.
Giraffes are mammals.
No. Giraffes are placental mammals, not marsupials, so they do not have pouches.
No. Peacocks are birds. Giraffes are not birds, they are mammals.
Yes, giraffes are land mammals.
they are mammals,PERIOD.
No. Giraffes are placental mammals. Unlike marsupials, the female does not have a pouch.
Giraffes are mammals. Mammals do not lay eggs.
Iguanas are not mammals, they are lizards. Giraffes are mammals, as are bats. Both of these have the criteria for being a mammal; they have hair, are warm blooded, and produce milk for their young.
Giraffes are classified as mammals and as such are warm blooded.
If your asking which is the biggest animal then a whale is the largest underwater creature and elephants are the largest land mammals
The only mammals that do not have live birth are monotremes. Giraffes and whales are mammals, but not monotremes. So yes.
They're both.