Literally hundreds of common plants, both indoors and out, have toxic effects on our pets causing everything from mild gastro-intestinal upset to death. Sometimes dogs and especially cats like to munch on grass and plants for a variety of reasons and sometimes for no reason at all. Try to keep poisonous plants away from your pets' reach, a list of toxic plants compiled by the ASPCA, the Humane Society and the American Animal Hospital Association (AHAA) can help you determine if you have any poisonous plants around your home or yard. If you think your pet has been poisoned contact your veterinarian or emergency vet immediately and the ASPCA National Animal Poison Control Center can be reached at one of the numbers below: 1-900-443-0000 ($45.00 per case. The charge is billed directly to caller's phone.) 1-888-426-4435. $45.00 per case, credit card only.) Follow-up calls can be made for no additional charge by dialing 888-299-2973.