My adopted cockerpoo x Labrador is much the same, super sweet, no aggressive behaviours but can't comprehend that every other person and dog wouldn't want to be best friends with him. He's getting better though and is now much more cautious approaching other dogs but will still run half way up to another dog, stop and wag his tail until the other dog comes up to him which can be stressful. Super fussy eater too, I'm told that's a poodle thing.

I saw a chichuaua attack my border collie once, she somehow flipped it on it's back, put a paw on it's neck, snarled at it, then let it go.

She handled that better than most humans would have.

Soooo you're saying we should be using them for finding drugs instead of shepherds? We just need to make sure they don't destroy the evidence...