My go is for the Buzzard, it would sure as hell make desert trips and heat waves seem a lot less worrying and paranoiac.

I'm not sure I understand that one. What's the connection between buzzards and heat waves? Why do they make you worry? We have a ton of them in Germany, pretty cool birds and not dangerous unless you're a mouse.

I guess if I had to pick one, it would be ticks. But I'd rather not remove any, because whatever animal you remove may have devastating consequences on the entire ecosystem.