The seeds or pits in the following contain cyanide and should never be offered to birds or other companion animals. Although some mushrooms can be consumed safely, it is best not to take chances. Care should be taken to keep out of the reach of pets because mistletoe berries can be toxic. Can have cumulative effect. Extreme caution should be taken to prevent access to cigars, cigarettes, and pipe tobacco.
Seed is extremely toxic when seedcoat is broken, as it is when the seeds are strung.