If we did our job, your pet had lots of play time and exercise while boarding or in doggie daycare and is worn out! There's so much activity in our hospital that your pet is likely over stimulated and excited. Because of this, his sleeping pattern can change in the time spent with us, and he just needs to catch up on his zzzzz’s!! I usually feel like sleeping a lot when I come home from vacation as well. Typically after a good night’s sleep, Fido feels like playing again within the next 24 hours.