get 40 different animals
There are approximately 40 different species of dolphins
40
There are 40 species of mosquito's in Alaska
The average speed of a dolphin is 40 km/hr. Certain species of dolphin may swim faster or slower. There are about 40 species of dolphins in the world.
40%
40%
More would be too many for good balance, and fewer would be not enough. One could also ask why is there only one species of human.
It's not a game that you can win or beat. It has at least 40
Madagascar.
no
About 40 species of bats are in the US
they live 40 years in captivity and 25 in the wild.