関連ワード:
do dogs need more sleep as they get older do dogs sleep more as they get older at night do puppies sleep more as they get older do dogs sleep more as they grow older do dogs sleep more soundly as they get older do dogs sleep more deeply as they get older do dogs tend to sleep more as they get older do dogs sleep more or less as they get older how long do dogs sleep more as they get older do older dogs need more sleep
