Why does my dog stick his tongue out?

All dogs stick their tongues out some of the time and this is normal. It helps them to cool down. Hanging tongue syndrome can become painful to the dog. This is because the tongue is always hanging out of the mouth and is not getting the natural moisture from the mouth so it dries out and cracks. read more

It seems to be quite common in Chihuahuas along with other small breeds. We even have a gallery post on cute Chis with their tongues out here. read more

If your dog’s tongue sticks out constantly, you can rest easy, as he is most likely not in any pain. Pet owners should keep an eye on their pup’s tongue and mouth, as there is a greater chance that your dog’s tongue could get dried out, according to Ahlgrim. read more