I've also added water to canned food for a sick cat. She loved it.

Mine don't get much wet food because one of them is quite...messy...afterwards (she apparently has a sensitive stomach) and I usually split a small can between two 13-pound cats! That does seem like a lot for yours, but I would just portion it out.

I would careful of the tuna juice suggestion - it can cause a blockage so cats are unable to pee (at least, that's what the vet told us when we had a similar problem with my old cat). Maybe some kinds of tuna are preserved safer than others?

And I love love love all of the border collies and birds on here! I want a large bird and a dog that runs