A wide variety
of underlying factors can cause vomiting and/or diarrhea in both dogs and
cats. To narrow down possible causes,
look at some important elements in the pet’s history. These include:
Age- The list of underlying causes in a
young, healthy animal is different than the list in an older animal.
Overall health of the animal- Any additional
symptoms, such as listlessness or anorexia.
Indoor vs. Outdoor pet- Possible
exposure to toxins.
Frequency of vomiting
Presence of blood in vomitus
Potential causes of vomiting and/or diarrhea in
puppies/kittens:
1) Foreign Body-
This is one of the first things to rule out because puppies and kittens are
notorious for eating things that they shouldn’t.
2) Intestinal
Parasites- This is a very common cause of diarrhea in young animals. In addition, a high worm burden will
sometimes cause vomiting.
3) Toxin
Ingestion- Several house plants will cause vomiting if ingested. Additional toxins include: chocolate,
ethylene glycol, and rat bait.
4) Viral
Infection- In a puppy, it is important to rule out the possibility of a viral
infection such as Parvovirus or Distemper virus.
5) Diet- An
abrupt change in food or if the puppy/kitten eats something outside of their
normal diet, especially something high in fat, can cause vomiting.
Potential causes of vomiting and/or diarrhea in
older dogs/cats:
1) Stress- Older
animals become much more sensitive to changes in their environment. If the animal has been placed under increased
stress in the environment, this can cause vomiting and/or diarrhea. The diarrhea will often be blood tinged.
2) Food
Sensitivity- This can be due to a change in diet or sometimes dogs/cats will
develop sensitivity to their regular food as they age. The most common symptom is chronic
unexplained vomiting.
3) Underlying
health issue- In older dogs/cats it is
very important to rule out the possibility of an underlying health issue, such
as pancreatitis, renal disease, or liver disease.
4) Foreign Body-
This includes hairballs for cats.
5) Toxin
Ingestion- Several house plants will cause vomiting if ingested. Additional toxins include: chocolate,
ethylene glycol, and rat bait.