Sigmoidoscopy. A sigmoidoscopy is a diagnostic procedure that allows the doctor to examine the inside of a portion of the large intestine, and is helpful in identifying the causes of diarrhea, abdominal pain, constipation, abnormal growths, and bleeding.
By MeLoveMyPet on in Medium Dog Breeds. There are big dogs and small dogs, and of course, there are the medium dogs. Dogs classified as medium are just about in the middle in terms of size and weight, defined to be between 13 to 24 inches, and around 20 to 60 pounds.
A good guideline to follow is: 1  Small breeds and dogs weighing less than 20 poundsâ7 years of age. 2  Medium breeds and dogs weighing 21 to 50 poundsâ7 years of age. 3  Large breeds and dogs weighing 51 to 90 poundsâ6 years of age.  Giant breeds and dogs weighing 91 pounds or moreâ5 years of age.