If there was to be anything as the result of foolishly letting a dog get into a cooked chicken bone, it would come from THE BOWEL via the potentially ripped intestines/stomach or even higher up the digestive tract. If that blood, which is VERY SERIOUS, came from the bladder, it's a serious UTI, or even bladder stones and just a coincidence re the chicken bone.
I've had bitches with UTIs and males with bladder stones, and NEVER saw a concentration of blood like that.
If this has ANYTHING to do with your dog - get off here and straight to your vet!!!