Hugo isn't super quirky, but he HATES cold rainy grass. If it was cold and rainy in the morning, he paces on the sidewalk and then VERY reluctantly steps barely onto the grass to pee and jump back on to the sidewalk.
River... is a weirdo. She has more quirks than I can count. When snuggling, she desperately wants to have some part of her face under some part of your body. The first thing she learned to do when we got her was "sit" and now she's obsessed with sitting so when we go to feed her scoots along on her butt in excitement. When she has to poop to runs to a spot she wants, walks past it and then backs up to it to poop. When she wants something you have she springs straight in the air in front of you but makes no attempt to touch you or grab the item. I could go on and on, lol.