First things first. A warm
to Levisdocker and I hope you like this site, I Know
.
I haven't played the game much yet (just got it a couple weeks ago) But of the dinosaurs I've tried so far I like the velociraptor best because It doesn't seem to mind crowds much and if you give a pair the right habitat in a space of 240 or more tiles ( not too difficult as velociraptors will accept the rock cave as a shelter, and aren't very demanding.) then you should soon get a trio of babies.
First, make sure that there is a male-female pair, then as soon as they grow up, sell the original pair (unless you made the habitat 400 tiles it will be overcrowded).
If there was a pair in the original group of babies then it won't be long before you get another trio of babies.
then sell the old trio and repeat, and not only will you not have to buy more animals, but you also make a profit every time you sell the older dinos.