Wiktionary(0.00 / 0 votes)Rate this definition: mutant(Noun) Something which has mutated, which has one or more new characteristics from a mutation. mutant(Noun) Someone or something that seems strange, abnormal, or bizarre. mutant(Adjective) That has undergone mutation.
Best Answer: The Blue Whale, Balaenoptera musculus, is the largest mammal living today. It is also the largest mammal to have ever lived. In fact the Blue whale is the largest animal ever to have lived on the planet as far as we know; bigger by far than ever the largest Dinosaur.
A list of the 5-10 largest mammals on earth would include only a list of whales. The blue whale of course being the largest. Blue whale is not only the largest mammal on earth â¦ , but the largest animal of any kind on the earth.Better still, the blue whale, is the largest animal to ever exist on the earth.he blue whale of course being the largest. Blue whale is not only the largest mammal on earth â¦ , but the largest animal of any kind on the earth. Better still, the blue whale, is the largest animal to ever exist on the earth.