Also you could look into DIVERGENT evolution, which means a new species can evolved from a current one, but in a different environment that initiated change. like this : monkey A and B, who are the sam species, live in trees most of their live. A has children that stay in trees, while B has children that lave trees. as a result, A's children will remain A-like. However B's children will evolve for their new environment, say water, and develope stronger lungs, webbed hands, etc. Eventually B's decendants will become a new species and A's will still be very A-like.
Also BornDragon you have a very common misconception about evolution, see, evolution doesnt say we evolved FROM monkies, or chimps,or apes. Rather it ays we SHARE a common ANCESTOR. and given the fossil and anatomical proof, id say thats a fair statement. i doubt you wuld anyway, but dont feel bad about tinking we came from monkies, unfortunatly that sems to be the general understanding people have about evolution, and its just not right
couple things here: i think the "cat" is an early primate, which eveolved into another smaller primate, the "mouse" and while that doesnt follow evolution closely, keep in mind that this is, infact, a game. games arent made to be realistic, theyare made to be fun. which this is really only medicre at.