Yes! I mix it with just a touch of water to help it stick to my dogs food better. I feed them cooked chicken and some kibble so they don't really get "gravy " like what you get in wet dog food.
Yes it's easily mixable or can be sprinkled on top
I have put it in wet food but I prefer dry. When you put it in wet food it changes the texture to the point that my dogs aren't very excited to eat it-whereas they love it in dry food with a bit of water. But it will work if that's all you feed
We did and the dog loved it and can't wait for his daily dose each morning. We normally only feed him dried dog food so no wonder.