Do you colour the dog food so it looks like slime? Doesn't look very "dog food"

That's because it isn't.

It is smart guy.

The only things in this slime are canned dog food and water. The water is necessary so that it pours--otherwise it is too thick to be poured.

Can confirm. Not just dog food but tons of canned stuff does better coverage when it's watered-down because when you try to pour it straight from the can it's mostly lumpy chunks so for better coverage you gotta mix it good with water. Another great one btw, Slimed Models!