I sometimes refer to my dog’s crate as his apartment. It’s large enough that I can fit in there with him (sized for “extra large” dogs, while he is “medium” sized) and it’s outfitted with a memory foam dog bed, two pillows, and a sherpa blanket. He likes to hang out in there with the door open during the day, and if I need to leave him home alone, he races in at the mention of “crate,” knowing that once he gets there he’ll get a treat. Still, whenever I close the door and lock him inside, I’m met with a wave of guilt. Is it okay to keep a sentient being cooped up like that, even if only for a few hours?