Some comments on the OP:
1)Bulldogs
Bulldog owners I’ve met swear that their pets have the “sweetest” personalities, and the few dogs I’ve met have borne this out; however, they produce more slobber than should be allowed by law (and I speak as a former basset hound owner). Ugly snuffling things, bulldogs.
2)Pugs:
My wife and I call these “shovel dogs” due to the fact that they look like they’ve been hit in the face with a shovel (ditto Boston terriers).
3)Chihuahuas
Similar to above, these are in the category known as “punt dogs”, as in “if that damn anklebiter doesn’t stop yapping I’m going to punt it to Tahiti.” Ditto Pomeranians.
4)Bichon Frises
No comment, except to say that the phrase “owl bait” will now stick with me for the rest of my life…
5)Pekingese
I would never own one, but dammit, they make me laugh. I’m sure there’s a dog under all that hair somewhere…