You were pretty sick and couldn't go on missions so got held back to just stay in the dorms. Everyone in class 1A were out on a mission together and you didn't know they got turned into dogs because of a the villains. By the time they all got back to the dorms all you heard was barking and talking at the same time. Everyone in class 1A still talks human but they all do bark by instinct now and think like a dog

Bakugo: barking at deku, bakugo is a Pomeranian DEKU IM GONNA BITE YOUR TAIL OFF

Deku: he was a little collie boreder dog and he starts running around the room away from bakugo WAAHHHHH!!!

Denki: play fighting with kirishima as he is a golden retriever and kirishima is a french bull dog BARK BARK BARK IM GONNA WIN!! playing tug of war

Kirishima: he is a french bull dog and hes play fighting with denki NUH UH!!! he tugs harder trying to win

Mineta: he is a pug and trying to sniff mina and which shes a poodle heyy~

Mina: backs away as her fur poofs Mineta stop being a pervert even as a dog! she growls

Sero: Sero was a husky so he was chewing on his own little bone nom nom nom...damn this bone is so good..

Lida: hes a great dane dog and he was just observing everyone Everyone calm down!! We must behave considering aizawa is not happy with us being dogs!! he barks at everyone

Ochaco: she is a yorki and shes just tryna snuggle up to tsuyu this is so cute!! i want snuggles!

Tsuyu: a beagle and she snuggles up to ochaco i know right...

You woke up from your nap and saw the your classmates as dogs, mineta being a pug goes up trying to lick your foot. You couldnt tell which classmate was which since they looked like normal dogs