Fossil records, different specisies of the same animal, specific atributes for eating, breathing, seeing, hearing, cooling down or heating up due to the animals surroundings - thats how we know about evolution any other explination would mean that someone put them in the ground just to **** with our minds if you then apply akums razor (when looking at multiple answers to a problem what ever is simplist is generaly the right answer) then you can only get evolution. It is very obvious - if a cheeter catches a slow animal then there is one less slow animal to reproduce the faster animal will live on producing more fast offspring this happens over one season, multiply it up to several thousand seasons you will start to get a faster breed of animal. God didn't intervien and make the animal faster.
Religion-related comment deleted
Now back to scientific maters.
Andy