Remove Vehicle. You don't want to discover the significance of antifreeze by being forced to pull over, due to an overheated engine. Antifreeze contains lubricants and anti-corrosion agents to keep components like your radiator properly lubricated and free from corrosion.
Fear, Pain, Excitement. Your dog may shiver due to fright or excitement, an occurrence common in smaller or excitable dog breeds. Some dogs tremble when they encounter other animals, or if they have a form of anxiety in which meeting other people makes them overly anxious. Loud noises ranging from thunderstorms to vacuum cleaners and power tools can also frighten dogs to a point of shivering. Shivering can also be a sign your dog is in pain.
Infections in dogs may cause fever (a temperature over 102.5 degrees Fahrenheit) and this may lead to symptoms such as panting and shaking. The infections may be viral, fungal or bacterial. Depending on the causes of the infection, the dog may also display other symptoms. The ingestion of toxic materials and toxic foods may cause a severe reaction in your pet. Shaking and panting are just a few symptoms of poisoning; the dog may also vomit, have seizures or collapse.