Well I was on amazon about to click the buy button for a bonsai sago palm and I looked it up beforehand and found this Wikipedia page on toxicity here
Toxicity
"Cycad sago palm is extremely poisonous to animals (including humans) if ingested. Pets are at particular risk, since they seem to find the plant very palatable.[2]*Clinical symptoms of ingestion will develop within 12 hours, and may includevomiting,*diarrhea, weakness, seizures, and liver failure or*hepatotoxicity*characterized by icterus, cirrhosis, and ascites. The pet may appear bruised, have nose bleeds (epistaxis), melena (blood in the stool), hematochezia (bloody straining), and hemarthrosis (blood in the joints).[3]*The ASPCA Animal Poison Control Center estimates a fatality rate of 50 to 75% when ingestion of the sago palm is involved. The incidence of ingestion by pets has risen by over 200% in the last five years.[4]*If any quantity of the plant is ingested, a poison control center or doctor should be contacted immediately. Effects of ingestion can include permanent internal damage and death."