Cute game, and maybe I'm being silly for taking it too seriously, but I found the patting in this to be mediocre.
It certainly has a good foundation, being a game that allows you to pat a dog: that deserves a lot of praise straight up. Furthermore, I found the use of mouse controls very clever, as it allows you to fine-tune and customize your patting in a very analog, granular way: allows for a lot of tactile feedback, as it were, and it felt satisfying to see the dog squash and stretch to your hand.
But overall I found the game a bit unsatisfying. For one, I really disliked the way the hand was so sensitive, warping and glitching to absolutely nauseating proportions with the slightest movement. It's as if you heard that every indie game needs squash and stretch animations but went way overkill on it. Second, I was insulted that I could not do a side-to-side pat: what is up with this discrimination where only up-down pats are allowed? And what about chin scratches or belly rubs? Maybe you could argue that those don't count as pats, but even then, why are we not allowed to pat diagonally? Being stuck to the rigid dimensions of only straight up and straight down pats is so stifling and thwarts the sense of feedback. Basically, I want something like the Mario 64 face warping, except for dog patting.
If you're gonna make a patting simulator, I don't want you to be lazy and make something this overly simple, safe behind the shield of treating it like a gag: I want the best patting simulator, damn you, so put some effort into it! The world deserves it!