I've eaten a lot of tasty animals and guts, gator, buffalo, turtle, frog, deer etc. They were okay, nothing special if you ask me.
However, chicken gizzards, hearts, and livers are one of my favorites. Especially gizzards, I love them.
I had deer liver and heart once, I didn't really care for it, as a matter of fact, it was nasty. Of course, I found out later it was my fault because I didn't remove the skin from the liver before I prepared it. It was so bad I won't even try it again though. That was back in 1982 and I've never forgotten how bad it was.