Most Common Poisonous Substances for Dogs & Cats

Most Common Poisonous Substances for Dogs & Cats

Here is the list for the top 10 most common poisonous substances

For Dogs:

  • Ibuprofen
  • Chocolate
  • Ant/Roach Bait
  • Rat Poison
  • Acetaminophen
  • Cold Medicines containing Pseudoephedrine
  • Thyroid hormones
  • Bleach
  • Fertilizer
  • Hydrocarbons (paint, varnish, oil, fuel)

For Cats:

  • Parasite prevention products meant for dogs, containing Permethrin
  • Other topical parasite prevention products
  • Venlafaxine – an antidepressant
  • Glow sticks/jewellery
  • Lilies
  • Liquid Potpourri
  • Non-steroidal anti-inflammatory drugs
  • Acetaminophen
  • Rat Poison
  • Amphetamines

Symptoms following ingestion may include but are not limited to: muscle paralysis, nervous system malfunction, fatality, irritation of stomach and intestines, dizziness, increased heart rate, vomiting, diarrhea, nausea, convulsions, depression, weakened heart beat, intense burning in the mouth esophagus or stomach, stupor, skin inflammation, stomach or intestine ulceration, profuse salivation, tongue swelling and suffocation, excitement, breathing distress, coma, weakness, collapse, staggering, tingling, numbness, vision impairment or blindness, abdominal cramps, drowsiness, blisters, pupil dilation, headaches, elevated blood pressure.

If you suspect your pet has come into contact or ingested any of these items or other possible toxic substances, call the Chestermere Veterinary Clinic at 403-272-3573 right away.

For 24 hour/7 days a week availability call the Pet Poison Helpline: 1-800-213-6680 or visit

The sooner you get your pet help, the better the likelihood for recovery. Remember to have the ingested substance with you, if possible, to give information over the phone, or to give to the veterinary team in person.

If you have further questions about toxic substances e-mail us at

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Meadows, Irina DVM & Sharon Gwaltney-Brant DVM, PhD. “The 10 Most Common Toxicoses in Dogs.”
Veterinary Medicine, March 2006.
Merola, Valentina DVM, DABT & Eric Dunayer MS, VMD, DABT. “The 10 Most Common Toxicoses in Cats.” Veterinary Medicine, Published June 2006.