I heard grapes and/or raisins...

Question
I heard grapes and/or raisins could be toxic to dogs.   My small dogs love
them (mostly green grapes) & I've not noticed any problems.  Should I be
concerned?  

Answer
YES YOU SHOULD BE CONCERNED AND YES THEY ARE TOXIC.  The Animal Poison Control Center has reported several deaths from ingestion of grapes and raisins in dogs from kidney failure.  I would recommend stop feeding them.  Signs of kidney disease are subtle and dogs do not usually get sick until 75% of their kidneys are NOT functioning.