Hi!
Personally for pets I shift/right click on the pet in question and use "make happy". The frequency of dirty dogs annoys me! That being said, LittleMsSam has some pet mods that may help out!
Fill up your dog's needs when you walk them:
https://littlemssam.tumblr.com/post/175411275238/go-for-a-walk-with-dogs-will-fill-up
Hire a dog walker (needs will fill up):
https://littlemssam.tumblr.com/post/175411487173/dog-walker-dog-jogger-hire-a-dog-walkerjogger
Summon anyone on your lot to walk and or bathe your dog (works well with Dog walker mod!): https://littlemssam.tumblr.com/post/175411547238/ask-to-go-for-a-walk-bath-dogs-ask-others-to
This prevents sick/dirty/sad/hungry NPC cats and dogs:
https://littlemssam.tumblr.com/post/175411104103/no-sick-dirty-sad-and-hungry-cats-dogs-npcs
Kids can walk dogs:
https://littlemssam.tumblr.com/post/175411703638/kids-can-go-for-a-walk-with-dogs-this-mods-enables
I couldn't find a Mod that rids the world of leaves, sorry. It may be out there somewhere...
I think you can prevent the goofy outfits with MCCC:
https://deaderpool-mccc.com/#/doc/mc_dresser
