Lia a dog lover and makes the dog and the owner happy

Hai my name is lia. I am from indonesia, in my country i have 2 dogs we named ultra and snowy. I am very happy and liked to walking with them and play ball. Sometimes i teach them to behavior like how to stay when i give food or maybe to seat and down. That is basic that i teach for dog. But for first i like to know from dog owner what the caraterist the dog. What makes them happy what food they alergic ar dont like so i can feed them the right food.