Any neighborhood hounds will come running for the blood but not rabbits or squirrels (in my experience). Our old hound, Joey, once found a bag of Blood Meal in the garage. What a sight to see his entire head covered with it!
Some of the tubers of my last order received were not up to expectations - some are barely sprouted. I won't be using them as centerpieces in the garden! Others I saved from last year are over 2' tall.