However they are mammals, and like human mammals they are omnivorous and prone to eating 24 hours a day if given the choice. Another shocking article about the benefits of Intermittent Fasting.
Fasting Every Other Day
Excerpt from the article:
"A five percent reduction in calories would be the equivalent of reducing about 100 calories a day in a human diet," said Hellerstein. In other words, for the mice, intermittent feeding seemed to provide similar gain with a bit less pain than a more restrictive diet.
Hellerstein noted that animals in the wild regularly go through cycles of too much and too little food, though not by choice. Major predators, such as lions, may go days without eating and then binge when they make a successful kill. "It may be normal to have periods where we are not eating," said Hellerstein. "But in domestic life, there generally is continuous access to food."
So if you want to truly eat Primal or Paleo, try a little bit of starvation (without actually starving yourself).