He is a rat is trying to get food for my garbage can, but he’s chasing away by a crow crow eat the food, and that must find other based on this information what is the relationship between the Crow and the rat?

Based on the provided information, the relationship between the crow and the rat can be described as a competitive or antagonistic relationship. The crow is actively chasing away the rat and eating the food, indicating that they are competing for the same resource.