Hey this is a pretty cool idea for a game! Not that I necessarily consider myself a CHAD, but always happy to help a pup in need (while trying not to turn them into a hush puppy).
I ran into a few graphical errors while playing, it looks like you might need to adjust the z-index on some of the sprites. There were some times that dogs would be hidden behind the grass, so I couldn't beat the level because I kept running into them and didn't know which ones still needed to be cured. I also wasn't a big fan of the font, just because the H and K looked similar, so some words were hard to read.
Overall, though, I'd say it's a great first submission for this jam! Keep at it and I hope to see you in the next one!