Many household cleaners, human medications, and plants/foods can be toxic to your pet. If you think that your pet has ingested something problematic, there are several poison control numbers you can call to get information on whether your pet needs intervention or not.
ASPCA Animal Poison Control Center: 1-888-4ANIHELP
Cost:$65 per call, but includes follow up calls as needed for that case
***IF YOU DO NOT HAVE A CREDIT CARD, CALL 1-900-443-0000. The $65 charge will be billed directly to the phone. Follow up calls for the case can be made at no additional charge.
A thorough list of toxins is available on each of the above listed websites.