One One Monogatari Kanemochi No INU Ni Shite to Ha Ittaga, Fu Enriru Ni Shiro to Ha Itte Ne! (Kadokawa Sneaker Bunko) [Light Novel]

[Machine Translation] After dying of exhaustion, Rota's wish was to be reborn as a rich dog who would never have to work again. His wish is granted by a benevolent goddess. He has a kind owner, a daughter, a delicious meal, and happy days with unlimited naps. One day, however, he realized that he was not a dog. She was a wolf, not a dog! This is not a dog, but a wolf! Lhota does his best to pretend to be a dog, but the goddess' overzealous service is too much for him. But the goddess was not to be outdone. She had been reincarnated as the legendary Fenrir, the Demon Wolf King!

過労で死んだロウタの願いは、もう働かなくていい金持ちの犬への転生だった。その願いは慈悲深い女神によって見事かなえられる。優しい飼い主のお嬢様、美味しいご飯に昼寝し放題の幸せな毎日。しかし、ある日気づいてしまう。「大きな体、鋭い牙、厳つい顔...これ犬じゃなくて狼だ!?」ロウタは全力で犬のフリをするも、女神の行きすぎサービスはそれどころではなかった。狼は狼でも、伝説の魔狼王フェンリルに転生していたのだ!