Yes, Coontie Palm is toxic to dogs!
Dogs accidentally consuming the Coontie Palm plants can show the following clinical symptoms: Vomiting, Prolonged Depression, Incoordination, Hypersalivaton, Sleepiness Or Excitation, Dilated Pupils, Low Body Temperature, Low Blood Pressure, Coma, Seizure And Death (In Rare Cases).
Coontie Palm consumption is also toxic to Cats and Horses.
Toxic Principles Of Coontie Palm: Cycasin, B-methylamino-l-alanine, unidentified neurotoxin (cattle).
More Info About The Coontie Palm Plant
Scientific Name: Zamia pumila
Family: Cycadaceae.
Also known as: Sago Palm, Cardboard Palm, cycads and zamias.
The answer is based on information found on The American Society for the Prevention of Cruelty to Animals (ASPCA) website.