Canker Sore Overview. Canker sores, also known as aphthous ulcers, are among the most common causes of painful sores in the mouth. 1  The classic lesion is a small (less than 1 centimeter) oval to round ulcer with a erythematous (red) border.2  They occur on the mucous membranes inside the mouth.anker Sore Overview. Canker sores, also known as aphthous ulcers, are among the most common causes of painful sores in the mouth. 1  The classic lesion is a small (less than 1 centimeter) oval to round ulcer with a erythematous (red) border.
Other Causes of Heavy Panting in Dogs. Heavy breathing or deep, intense panting can also be a symptom of eclampsia, also called milk fever. Eclampsia is a dangerous condition that affects nursing mothers; low blood calcium levels lead to an inability to stand or walk and tremors.
Bigger muscles, faster whippet. Differences in a muscle gene make some whippets even faster. Whippets are really fast dogs. They can run up to 35 miles per hour. And many of the fastest ones have a genetic mutation that makes them so fast.A new study found that whippets that had a certain change in the myostatin gene were stronger and faster.hey can run up to 35 miles per hour. And many of the fastest ones have a genetic mutation that makes them so fast. A new study found that whippets that had a certain change in the myostatin gene were stronger and faster.