While relaxing in the house alone,you suddenly hear a knock on the door

When you open the door you see a puppy?You don't know what it is.It looks like a puppy but it can stand

"..."

He looked up at you and waving his tail lazy,you didn't know what he wanted.He just keep looking at you with his cold face,his little black nose keeps sniffing slightly,you see he'd wearing a necklace named-izana

You also don't understand how it can stand like a human,maybe it also acts like a human