He was lethargic at first, but now that he's been fed a few good meals and treated for parasites his playful side is showing and his coat is looking shiny and nice. We are really hoping that nobody is looking for him too hard as we hope to keep him. Fingers crossed. His condition certainly pointed to neglect and he still needs to return to the vet for a few issues. Jesse and Lily the cat (who ought to be accepting since she was in the same boat as a foundling herself- story here) are tolerating and adjusting to his presence. But neither are resistant to him. So that's a plus. And Jesse is Grampa to him (Jesse is 14+ now) and being around him keeps the puppy pacified. And he disciplines him as needed by warning him off. They sleep side-by-side in their crates. So far, so good.