Methanol is found in a variety of consumer products including windshield washer fluid, paint thinners, and household cleaning products. Ingestion can be very toxic to pets, particularly cats and dogs.

Signs and symptoms of toxicity: Clinical signs of toxicity include depression, fatigue, sedation, difficulty walking and decreased body temperature.

Toxic consumption:
In dogs, 5 – 11.25 mL/kg (2.2 – 5.1 mL/lb) of undiluted methanol may be toxic, even fatal. There is no established toxicity threshold in cats. All incidences of exposure should be reported immediately.

Dogs: Methanol Toxic Consumption
X-Small Yorkie, Chihuahua	Small Pug, Boston Terrier, Poodle	Medium Beagle, Scottish Terrier	Large Boxer, Cocker Spaniel	X-Large Retriever, German Shepherd	XX-Large Great Dane, St. Bernard
1 – 10 lbs. (0.45 – 4.6 kg)	11 – 25 lbs. (5 – 11.4 kg)	26 – 40 lbs. (11.8 – 18.2 kg)	41 – 70 lbs. (18.6 – 31.8 kg)	71 – 90 lbs. (32.3 – 40.9 kg)	91 – 110 lbs. (41.4 – 50 kg)
> 2.2 mL	> 24 mL	> 58 mL	> 92 mL	> 161 mL	> 206 mL

References:
Osweiler, G, et al. (2011). Blackwell’s five-minute veterinary consult clinical companion. Small Animal Toxicology. [Kindle version]. Retrieved from Amazon.com