They’re Too Hot
Dogs don’t sweat, not like we do. So sticking their tongue out and panting to circulate fresh air and encourage evaporation of water from their tongues and lungs is how they cool down rapidly.
A tongue hanging out can be an indication that your furball is extremely relaxed or comfortable.
Sometimes your canine companion will lift their cheeks to get a better sense of a smell. They may even stick their tongue out and lick at the air to catch as much of the smell as they can.
When a new medicine is introduced to a dog, any number of possible side effects can occur. One of them just might be a lolling tongue.
If your dog’s tongue is hanging out of its mouth, some toothy abnormalities may be to blame.