Ironically, Nai was never that big on dogs, he was more of a cat person at the end of the day. But despite how cold he is towards people, dogs at least seemed to like him more often than not. Which is why he took up dog walking after dropping out of University. For the most part he only walks for friends (ie. Vash's friends) or people Rem sends his way. He can often be seen with a pack of pups in hand, and more often than not with Stamps (Rem's golden retriever) tugging at the lead.