The bond between the dog and his master is very strong.
The dog establishes a strong connection to his master especially when the dog feels the love and care from his master.
You may be angry to your dog at some point, but the dog would still wag his tail for you.
You can have lots of treasures in this world, but the dog only have you. The dog has nothing in this world but you.
(a tribute to our beloved dog who passed away)