Colitis is an inflammation of the colon (large intestine). It may be acute, with sudden onset and short duration, or chronic, that is present for at least two to three weeks or exhibiting a pattern of episodic recurrence.

There are many potential causes of colitis such as inflammatory disorders, infections (bacterial, viral), diet, food allergies, cancer, trauma, pancreatitis, etc.

There is no age or gender association with colitis. One exception is histiocytic ulcerative colitis, which most often affects young boxer dogs.

Most often, colitis causes some combination of fresh bright red blood in the stool, mucus in the stool, straining to defecate, and increased frequency of defecation, often many times per day. With acute colitis, the dog usually does not show signs of systemic illness, but dogs with chronic colitis can experience clinically important weight loss.

Diagnosis and Treatment Notes:

  • Colitis is generally diagnosed by microscopic fecal examination, bloodwork, abdominal x-rays, history and physical examination findings. In some cases, special blood tests to evaluate the function of the pancreas or colonoscopy with biopsies may be recommended.
  • Treatment depends on the severity of the disease, your individual pet, and your veterinarian. Many pets respond favorably to dietary modification. Some are treated with de-wormers, antibiotics, anti-inflammatory medications or drugs that affect the motility of the gastrointestinal tract.  Discuss treatment details when your pet is diagnosed with this condition.


What to Watch for*:

  • Loose stool
  • Diarrhea with blood
  • Vomiting
  • Anorexia
  • Weight loss
  • Lethargy

*Please notify us if you notice any of the above signs or if you have any questions!

Dear Valued Clients

During these challenging times, there have been some unforeseen changes at The Big Easy Animal Hospital. I cannot express enough my sincere apology for any inconvenience you have experienced at The Big Easy during these times. As we strive to make the practice safe to protect everyone including you, your family, and our Big Easy team and their families, I’ve decided to make certain changes while we are under this pandemic. These changes will be temporary.


Monday, Tuesday, Thursday & Friday:
Walk Ins: Check-in starts at 9:45am.There are a limited amount of patients we can accept. Our receptionists will be happy to assist you with options to help guide you and your pet(s).)


Saturday Hours

Saturdays will be TECHNICIAN APPOINTMENTS only. These will include boosters, bloodwork, nail trims, certain diagnostics, etc. There will not be a veterinarian on site. While I understand these changes can be inconvenient, I have listed local veterinary clinics that we have contacted and are open to see walk-ins throughout the week and Saturdays as well. For life threatening emergencies that occur outside business hours, please contact the following 24-hour animal hospitals below.

Please, be safe and healthy.

Thank you all for your understanding. -Aileen Ruiz, DVM


24 Hour Emergency Care:


Pittsburgh Veterinary Specialty and Emergency Center

807 Camp Horne Road
Pittsburgh, PA



4224 Northern Pike
Monroeville, PA

VCA Castle Shannon Animal Hospital

3610 Library Road
Pittsburgh, PA

Veterinarians Accepting Walk in Care:

Penn Animal Hospital

2205 Penn Avenue

North Boros Veterinary Hospital

2255 Babcock Blvd



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