Home/Fun Facts/dogs sleep up to 20 hours a day💡💡 Fun Facts💡dogs sleep up to 20 hours a dayNov 2, 2022•1 min read Fun Fact: dogs sleep up to 20 hours a day Sourcecasper.comShare this fascinating fact! 🥷Share on XDiscover more factsAll Fun FactsHome💡More Fun FactsKeep exploring and learningthe control of fire by early humans a million years ago changed our sleeping patterns. Exposure to artificial light during the afternoon altered humans circadian rhythms and contributed to a longer waking day, giving us 16 hours in the waking day while most mammals are only awake for half that.Read →Dogs rely on their sense of smell to detect changes and substances over time. Every day, smells help them comprehend the passing of time, even in the same location.Read →Adults with ADHD and SOI had a delayed onset of melatonin, which was on average 1.5 hours later than usual, resulting in them going to sleep much later than their usual bedtime.Read →that the dogs in competitive agility don’t rehearse the course ahead of time. The courses are randomized at each competition, and the trainers (without their dogs) only see the layout beforehand on the same day. When the dog runs the course they are literally seeing it for the first time.Read →some insomniacs may have nights of sleep misperception , where it feels like you were awake all night but you actually slept for hours.Read →The first Toy Story film (1995) required 800,000 machine hours and 114,240 frames of animation in total, divided between 1,561 shots that totaled over 77 minutes. Pixar was able to render less than 30 seconds of the film per day.Read →Explore All Fun Facts