The reason your dog is eating grubs is for the protein that the grubs contain.
Dogs and even cats have relied on grubs for a protein source for years even before they were domesticated.
Also dogs, cats, chickens, ducks and other pets also love the texture, flavor and scent of grubs.
Grubs are not poisonous or harmful to dogs or other pets and even humans can eat grubs.
Most white grubs complete their development in one year.
The adult stages of white grubs are scarab beetles.
Common names for some of the species of grubs include June beetles, chafers, and dung beetles.
Grubs burrow deep underground every winter, so they won't actively damage your lawn for a few months.
But the following spring, they'll emerge in the soil again, just as hungry as ever.
Grubs can be found within your lawn during the late summer months after the beetles have laid their eggs around July.
Female beetles lay their eggs about one or two inches deep in the soil.
They will spend two to three weeks laying eggs and will each produce as many as 60 eggs in this time.