Give him some food
From Create Your Own Story
It would be very bad from you to just let him starve. You open one of you cans and give to Luke. He imediately starts to eat, it was probably quite a while since he last ate. While he is eating you pet his head. You check his collar ... it says "Luke".
After not long he finishes the can and looks happily on you, he jumps on you and starts licking your face. You ...
Pull him off yourself and play with him
or
