There is something to be said about unconditional love. I heard that it exists between a parent and a child. A parent will always support his child regardless of what the child did. That of course is a fallacy since there are lots of examples of a parent withdrawing their support when a child fails to live up to their expectations.
Unconditional love exist between a dog and his master or in this case a dog and his new playmate. Have a look. If this doesn’t bring a tear to your eye then you need new glasses.