What Causes My Dog To Foam At The Mouth?

You can think of all the things that dogs can get into inside or outside the house. My sister’s dog grabbed a frog the other day, put it in her mouth, and then spat the frog out. He made sure the frog was okay, but the dog started foaming at the mouth, salivating and all that. They were very scared and called the emergency clinic. They said, “Oh, the toad probably got scared and peed in the dog’s mouth. That’s what caused the foam.” I have known of snakes that secrete a substance that would foam in a dog’s mouth after being touched, not poisonous snakes, but worms, garter snakes, or grass snakes. When dogs catch them, they sometimes foam.

Certain substances that stick to the environment, for example dirt, sometimes cause them to foam. You can also get something that looks like foam, but it’s really just hyper-salivation. Some dogs, when nervous, will salivate more than usual. I have seen dogs that go to the vet clinic and they are a little nervous and will have streams of saliva. I have seen other dogs who think they are going to feed themselves treats and that makes their salivary glands work. They will have strands of saliva or foam or will bubble. They are salivating a little more because they are waiting for that gift that you are going to give them.

Puppies are the worst because of the foam at the mouth. Many times, what goes into their mouths they swallow. Older dogs seem to have a bit more common sense. Many times, they will taste something that is toxic and spit it out.

Sometimes foaming at the mouth can be really benign. Most of the time, it is something that they put in their mouth and that irritates the mucous membrane. So if your dog is foaming at the mouth, don’t consider him an angry psycho dog, it’s just something they tried to taste or play with that caused it.

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