Thank you Dragonlance. I think I have got it.
So if I have 1 little dog, that is 100 % of a dog but if I have a really BIG dog then I have maybe 200% of a dog. But the little dog can't be more than 100% because it is already full grown. If it goes silly and makes a lot of noise then some people would say it is 110% of a dog but they are just being silly.