Coughing is a common symptom observed in dogs. It can be caused by a multitude of conditions. Some common causes of coughing include bacterial, fungal, and viral infections

Cutaneous lumps are lumps within a dog’s skin which make a nodule, raised area, or discoloration on the surface of the skin.

Collapse in dogs is generally defined as when a dog falls and cannot get back up.

Cloudy eyes, also referred to as corneal edema, have a hazy, filmy, blue, gray, or white discoloration over the cornea - the usually clear dome that protects the iris and pupil

Constipation is characterized by difficulty defecating with the resulting feces being dry and hard. This symptom is slightly different from tenesmus, which is straining to defecate with an empty or irritated colon, however both of these symptoms appear similarly to pet owners

Strabismus describes an uncommon disorder in dogs in which one or both eyes are not correctly aligned, giving the appearance of crossed eyes or eyes not pointing in the same direction together. 

A change in a dog’s bark can sound like a different pitch or volume; hoarseness; or apparent strain. Most conditions that lead to changes in a dog’s bark are not serious and can be easily corrected with minimal or no treatment.