Plants found in my woods include Mayapples, Monkshood, Elderberry, Oak and Cherry Trees, Nightshade, Buttercups, Cowbane, Lilly of the Valley, Star of Bethlehem, and Bleeding Heart, among others.
A great place to visit for lists and pictures of plants that are toxic to dogs and other animal species is the website of Cornell University. If you click on the link, you will be transported to a page that divides the plants up into categories, such as house plants, garden varieties, trees and shrubs, woodland plants, and prairie grasses/flowers. You are also able to look up plants by name, in case you were wondering about a new addition to your yard or flower garden. The photos are especially valuable if you are not knowing the name of something growing in your yard - very helpful.
Check it out to ensure a safe blooming season this year!