Some of the semes aren't complete puppy dog but they're kind of along the lines you're looking for. Plus they're cute. Enjoy!
http://www.mangago.zone/read-manga/jackass_sawatte_ii_tte_dare_ga_itta_yo/
http://www.mangago.zone/read-manga/go_houbi_chikubi/
http://www.mangago.zone/read-manga/doushiyoumo_nai_keredo/
http://www.mangago.zone/read-manga/mayonaka_no_acchimono/
http://www.mangago.zone/read-manga/sayonara_itoshi_no_my_friend/
http://www.mangago.zone/read-manga/ren_ai_nenrei/
http://www.mangago.zone/read-manga/boku_no_omawarisan/
http://www.mangago.zone/read-manga/soredemo_kamawanai/
http://www.mangago.zone/read-manga/akai_ito_no_shikkou_yuuyo/
Try BL Motel
Make me Bark is great!!
Hello~ can you guys recommend me some Yaoi where the seme is more puppy like instead of the usual calm, collected and cool seme or anything with a little less rapey vibes