Hmm,... Interesting question.
I wouldn't fuck a tiny frog, but absolutely would do group/orgy stuff with pretty much this entire page. If including men, I would need my wife to handle the regular cock. In any case, I would have to know she was OK with it...
I really, deeply desire having threesomes and beyond with my wife. But only to explore,... while sure I would take a crack at another pussy if she was totally OK with it,... Why not?.... But she thinks the only reason I would be open to MMF or such is so I would have some kind of leverage to sleep with another female. It's simply not the case,.... I just desire having very dirty / kinky sex on occasions,... I am the sort of guy that I think it would be genuine fun for me and a male dog or male person to both try our hardest to blow her mind,... two men dominating her. If she wanted to swap with another couple, I'd be OK with it. Just because I would love to switch things up,... I imagine the sex between us after we had both slept with other people and/or animals would be phenomenal.