Dogs bury bones because it’s their version of a doggy bag, or a way to store food for later consumption.
The act of burying bones and meat is an instinctual nature that has continued even though the dog has been domesticated.
In the wild, canines like the fox, jackal, and wild dog are often left after the hunt with more food than they can consume at one sitting.
Vultures and hyenas are more than willing to relieve them of their leftovers, some even before the pup is through eating.
To save the energy of hunting again, they bury what’s left for the next meal.
Sometimes a dog will remember where it buried leftovers, but if it doesn’t, it will use its keen sense of smell as an aid.