Added by on June 22, 2016 Symptoms of distemper in dogs The are often twitching of muscles or groups of muscles, seizures often distinguished by salivation and jaw movements, As the condition progresses, the seizures worsen and the dog may exhibit grand mal convulsions. The dog may also show signs of sensitivity to light, circling, increased sensitivity to sensory stimuli such as pain or touch, incoordination, and deterioration of motor capabilities.