I would make sure the owner knows about this behavior. Napping is probably the pup’s coping mechanism to deal with a potentially scary/chaotic/dangerous new environment, BUT there might be a medical issue. If the pup is sleepy/low-energy all the time or is in pain such that moving hurts, the owner will probably want to tell their veterinarian.
But the point of Fermi’s Paradox is that we are not seeing evidence of alien intelligence anywhere. We don’t expect it here on earth, but we look out in space and see no light/radio/other waves that look like messages; no energy bursts or other anomalies that don’t have better explainations (though some have no explaination at all). The Great Filter is simply a hypothesis – like the Dark Forest – as to why we don’t see evidence of intelligent life in space.
If we went back to caves, we’d have great-filtered ourselves.