As if on cue, the howling began as Lauren Gaulding, the education and conservation specialist at Saint Francis Wolf Sanctuary, began her introduction. Read More > ...

in the amount of time that dogs devote to sleep. The dog’s ancestor, the grey wolf, tends to show nocturnal (night-time active) or crepuscular (dawn and dusk active) sleep patterns in the wild.

in the amount of time that dogs devote to sleep. The dog's ancestor, the grey wolf, tends to show nocturnal (night-time active) or crepuscular (dawn and dusk active) sleep patterns in the wild. That ...

This has led to a large range of estimation (seven to 16 hours) in the amount of time that dogs devote to sleep. The dog's ancestor, the gray wolf, tends to show nocturnal (night-time active) or ...