This means that eating as little as two ounces of plant material may cause serious clinical signs to develop in a 60 lb dog. (wagwalking.com)
Trouble breathing is a very serious clinical sign that should never be taken lightly. (web-dvm.net)
Myxomatosis and Caliciviral rhinitis, both viral infections, usually result in more serious clinical signs apart from nasal discharge. (petsmagazine.com.sg)