These are wonderful resources for information on various poisonings from drugs and household chemicals to plants.  They are both available via the web or phone 24 hours a day for urgent information and advice.

http://www.aspca.org/Home/Pet-care/poison-control.aspx


and the




www.petpoisonhelpline.com/

Check out the link below for seasonal poison concerns. 

http://www.petpoisonhelpline.com/pet-owners/seasons/winter-holiday-pet-poison-tips/

And this link for listings of plants known to be toxic to dogs and cats.  

http://www.petpoisonhelpline.com/pet-owners/basics/top-10-plants-poisonous-to-pets/