#dog question

Anyone with knowledge/have a service animal able to help me/answer some questions? I think I may desperately need one and I don’t know where to start.

Idk how many people this will reach, but here goes. Me and my fiance are trying to plan for our next dog, we wont be getting it for probably about 1-2 years, so once Corvus has fully grown and matured more. We aren't too picky about energy level as we're fairly active and have a large fenced yard, and don't really care too much about high grooming maintenance since we already have a high maintenance grooming dog. We would like to keep with a medium-ish to small breed dog though. I personally would love a velcro dog, who's gonna want to cuddle at the end of a long and adventurous day. Some things we are looking to avoid would be dogs with brachy type faces, dogs with short legs and long bodies such as dachshunds and corgis, and dogs who drool excessively. We really want a dog who's going to be avidly able to keep up with our hikes and adventures as well as chill on lazy days or the ends of long and eventful ones.

The breeds we loosely have our eyes on are miniature aussies (although I cant remember if they're prolific for health problems or not) and Alaskan klee kai (more my fiance's choice than my own lol).

my four year old Yorkie has horrible breath and tartar buildup, so rather than spend $500+ on a dental cleaning i’m trying to find a good product to use at home! it has really good reviews on line, but there are those reviews that scare me a bit (like it making their dogs sick and whatnot).