In The Bark, the author discusses a study in that looked into the effects of age and feeding frequency on dogs’ sleep patterns.

once had a dog who slept in every morning, and I valued that quality in him immensely.  Though I made many attempts to figure out how to transfer this quality to all dogs, I suspect he just came into the world that way. True, we did feed him healthy food and give him lots of exercise, but that surely hasn’t worked on a large number of other dogs. Still, I maintain a strong interest in learning about the variables that affect dogs’ sleep patterns, with the eventual hope that dog guardians everywhere can apply it to their own dogs for the benefit of all.