That is a very well-trained dog. You can tell that he is looking at his trainer (off screen) who is probably telling him to "stay".

Some dogs, especially the females, take it upon themselves to take care of the little humans...

Were they playing in the mud together?

little brother followed big brother right into the deep end!

But they aren't my dogs, alas, just a cute pic from the interweb!

What is it about boys and puddles...seems to be an infatuation!