For example, if you choose the strength of an elephant you'll also get a long nose and big ears with it.
If you choose the eye sight of an eagle, you will also get a beak
If you choose an ability of a giraffe, you'll get the long neck as well.
What would you do?
Well I will pick the power of a lion, and I think I'll have his mane hair as a side effect right? I mean who would dare laugh at me?
A shark ! I'll become the best swimmer and break records in the Olympics, I don't mind the dorsal fin on the back nor the pointy teeth
With the current prices of real-estate I'd pick a turtle and never need a house anymore, just sleep in my shell
lol, but you see, you'll get more than the turtle shell: the ability you chose is the shell, but you'll also get a bad characteristic, which in this case would probably be the slowness or the dinosaur skin XD
Would you get the tail also? or the paws in your hands :D