1. Can be a person or an emotion. It is the action of loving, in a puppylike way. It is often referred to as cuddling.
2. The actual action is when your chihuha puts her neck on your neck.
3. As a name, you would just call them puppy love, usually referring to a dog but can be referred to close friends too.
1. "There was lots of puppylove when the two besties saw each other after the long break."