Dolphins .
duck-billed platypus Man
clearly i think the most abundant mammal on earth is Man*Human*. We dominate almost every where on earth..
Earth+Mammal=Shrew
The Blue Whale is the largest mammal on the Earth.
The blue whale is the largest mammal on earth.
A wolf because it is extremely endangered so it is possible for the wolf to be the last mammal on earth.
A Blue Whale is the largest mammal on earth and I would imagine at 16,000 lbs at birth the baby Blue Whale the largest baby mammal on earth.
The Polar Bear
The fastest mammal on earth is probably the cheetah, which can reach speeds of 60-65 MPH in short bursts.
a Blue Whale
no earth is a planetThe Earth is not an animal of any sort, it is not a living thing
The cheetah is the fastest mammal.