As others have said, I wouldn't worry about the plants too much. We have many plants in our yard that are said to be toxic (rhododendrons -SP?, azaleas, etc.), and we've never had any animals (or people) die due to the plants. Our chickens don't really seem interested in any of the decorative plants, just grass and clover. The dogs we've had in the past were never really interested in most of our plants, except for one dog who loved helping herself to our grape vine and tomato plants (both of which are supposed to be toxic to dogs). She never had any ill effects from her tomato and grape love, though, so possibly their toxicity levels are overrated.
Now, however, we have a crazy dog who, though he doesn't really seem interested in our plants outside of nibbling on grape leaves and doing his business on the new Asiatic lillies in the front yard (which I just found out are also toxic, so apparently I'm just drawn to plants that inevitably wind up being poisonous when I learn more about them ^^; ) , he does things I don't expect on a regular basis. We recently planted 2 foxgloves (which I also didn't know were like the MOST poisonous plants ever) in the back yard, and they will soon be moving into the flower bed next to the carport, where they'll be behind a fence where the dog (and the chickens) can't get at them. I doubt the chickens or the dog would mess with them, but since they are so poisonous, I'll move them to an enclosed flower bed just to be safe.
