Dog Fall Asleep While Watching Sport

This puppy tried to awake while watching sport...
Like humans and other mammals, dogs progress through different stages of sleep. Also like us, dogs experience REM sleep. The main difference between dog sleep and human sleep is how much time they spend in the different stages, as well as a dog’s tendency to sleep in bursts throughout the day. Dogs tend to experience sleep-wake cycles of 16 minutes asleep, 5 minutes awake – quite the contrast with our typical sleep-wake cycle of 7 to 9 hours asleep, 15 to 17 hours awake. When dogs fall asleep, they enter deep sleep. Their breathing and heart rate slow while their blood pressure drops. About 10 minutes in, they enter REM sleep and dream like humans. You can often identify this stage because their eyes roll under their eyelids, and they may start twitching in their sleep as they dream of chasing after squirrels. Since dogs are always on the alert to protect their pack from intruders, they’re able to wake more easily. It’s common for them to wake up before completing a full sleep-wake cycle, from deep to REM sleep. As a result, scientists estimate they need to sleep more often overall in order to get their sufficient amount of REM.
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