Is clover poisonous?

I just found zooey zoo nuts chomping on some clover...
I think it's just standard garden variety clover?
Is it poisonous?!!
Does anyone know if morning glory is poisonous?
Thanks

Clover is fine. Morning glory is poisonous.

Check out this list: http://www.cfainc.org/articles/plants.html

I found it very useful, and when I planned a new perennial bed last year, I looked up each of the plants on google to see if they had problems. Some of the plants listed there are just not digested properly, and can cause a bit of a tummy upset. I found that Sam learned to stay away from those. Others had much more dire side effects, such as Yew, which causes death. So I have to have a little argument with him whenever he goes near the neighbours lovely big yew hedge.