2007-01-28 04:19:31 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Biology
so many. sorry, no idea at all.
2007-01-28 04:22:07 · answer #1 · answered by kenn 5 · 0⤊ 0⤋
There are about 4260 species of mammals known on this planet at the moment, though taxonomists are still arguing.
Mammals are not the most speciose animal group on the planet, three other groups of vertebrates out-number them at the moment, Reptiles 6787 species, Birds 9703 species and Fishes with approximately 28000 species. Invertebrates, of course, have groups with huge numbers of species that outnumber all the vertebrates put together; Molluscs 80 000 and Insects 1 000 000; while Arachnids with a mere 44 000 species still outnumber any 3 groups of vertebrates put together. Mammals however are big. You can see them easily, and perhaps most importantly you are one.
2007-01-28 13:32:59 · answer #2 · answered by Anonymous · 0⤊ 0⤋
It depends on if you go into different types of them, but I think, just generally, about 30-40 thousand.
2007-01-28 12:23:53 · answer #3 · answered by Cavalia 4 · 0⤊ 0⤋
The site listed below says there are about 5000 species of mammals.
http://animaldiversity.ummz.umich.edu/site/accounts/information/Mammalia.html
2007-01-28 12:24:56 · answer #4 · answered by ecolink 7 · 0⤊ 0⤋
So many... I don't know the exact number but their are tons. Aything that thas mammary glands
2007-01-28 12:24:07 · answer #5 · answered by Danielle P 2 · 0⤊ 0⤋