Foam Dog Steps Is This A Dog Seizure?

Is this a dog seizure? - foam dog steps

I have 5 months neutered Chihuahua. I think she has seizures. We took her to the vet when their tics and foaming at the mouth. I know they can not have rabies shots because rabies was about 3 weeks. Veterinarians did not tell us much.

Here are your symptoms.

it is normal. Walski sniffing around like a normal dog.
He stops.
the sides of the mouth begins to tremble. his expression is angry. It took a few steps back. He stops in his tracks and started to stand on his hind legs. White foam begins to flow. He remained in this position for a few seconds. Notmally Then she gets up and stands motionless for a few seconds. So quiet and start runnning around like a madman. They welcomed me as if I am not in years. Then calmed down and sexually transmitted diseases.
She acts normal for some time. Then she made another one.

Other: It is generally chill. She does not have a normal appetite for some time.