Dogs grin at their owners or because they are protecting food

For dogs, eating and drinking is the most important thing. When the owner approaches when it is eating, it will think that the owner is trying to rob it. Food, he grinned and warned the owner.

Dogs grin or are possessive of their owners

Dogs regard the toys, kennels, teething sticks, etc. prepared by their owners as their own personal belongings. A possessive dog will not allow other dogs, not even its owner, to get close to its belongings.

The dog grins or is jealous at the owner

When the owner brings a new "family member" home, he is very friendly to the new member and ignores its existence. The dog will start to get jealous and grin to make the owner notice its presence.

Dogs grin at their owners or guard their babies

After a female dog gives birth to a baby, she may be aggressive when the owner comes near. Dogs are very protective of their children and do not allow anyone to harm them. Owners should remember to play with their dogs more often to enhance mutual affection.