Philip K. Dick - Beyond Lies the Wub: It was a 400 pound slobbering, disgusting blob with tiny piggy eyes but maybe it was good to eat?

It was a 400 pound slobbering, disgusting blob with tiny piggy eyes that peered dimly out at the world, perpetually looking for a place to lie down and sleep- but maybe it was good to eat? The crew of the spaceship had never seen anything like it before but they were desperate for anything to eat on their return trip. Everything else they had rounded up was on the scrawny side but at least they looked like something a civilized person might eat. But THIS, this "wub' as the natives called it...