If you've ever taken your dog out in the snow, chances are that they sneaked a lick (or a chomp) of the cold stuff. But why do dogs eat snow? And is it safe? If you've ever been concerned that your dog ate snow, here's what you need to know.

Only dogs know for certain why they enjoy eating snow, but there are several possible reasons for the behavior:

As long as the snow is clean, it's safe for dogs to eat in small quantities. The danger comes primarily from toxic substances, such as ice melt or antifreeze, that might contaminate the snow. And eating snow in large quantities could dangerously lower your dog's body temperature.
Another danger is that your dog might bite down on or consume harmful objects, such as sticks, rocks or trash that's buried beneath the snow. These could break teeth, cause choking or, if swallowed, cause intestinal damage or blockage that could necessitate surgery.
Never let your dog eat dirty, discolored or partially melted snow, or snow that covers roads, sidewalks or other heavily trafficked areas. And under no circumstances should you allow your dog to eat snow that's been driven on or piled up by a snowplow. If your dog ate snow that gives you cause for concern, give your vet a call.