Rectal and anorectal strictures are narrowings caused by scar tissues (the connective tissues that forms a scar). The formation of scar tissue can be due to inflammation, a previous injury or an aggressive cancer growth.
This narrowing of the rectal or anal opening obstructs the passage of stool and results in issues with dog's digestive system.
Common symptoms of this condition include constipation, diarrhea and defecating difficulties. The feces is often covered in mucus and blood-stained. There also may be a compensatory increase in the size of the dog's large intestine as a result of the stricture.