Not a sexual crush, but I did have deep desires to be with/be friends with a LOT of Don Bluth and Disney characters. Charlie from All Dogs Go To Heaven, the animals from Oliver & Company, pretty much any talking animal; I just wanted to befriend firries from a very young age, haha.

Well I have to mention Star Fox first as it's pretty much what drew me to the fandom. Fox/Wolf = *drool*
I'm also a sucker for Bowser.

One of the First characters I ever fantasized about, even non-sexually, was Beau from Dragon booster

The Cadbury's Caramel bunny and Jenny from Bucky O'Hare were definitely of interest to my younger self, but not really sexually. For actual sexy-times, I have to move away from furry characters (shock horror) and turn to Nene Romanova from Bubblegum Crisis 2040. She definitely gave me a thing for short-haired blondes.