Quenchless Thirst (Pets)

This is 'Dolon's antisocial behavior at the Mayslake dog park. He's using his own water dish here, but is of course quite happy to monopolize and perhaps upend anyone's water.
It is, of course, more important that the other dog not get any water than the water be preserved for his own personal use. Here he is shown battling with and then victorious over a sweet German Shepherd-mix puppy.
We're not sure where he picked up this behavior. Now, whenever any other dogs are around, he always drinks with the bowl braced between his front legs, poised to fend off any tricky water thieves. Of course, to the best of our knowledge, the only such thief he regularly encounters is himself.