Why it's dangerous
Blood meal can cause severe pancreatitis, while bone meal can form a cement-like foreign body in the stomach leading to gastrointestinal obstruction.
Toxic compound: Iron (if fortified)
Good to know
These products are highly palatable to pets; bone meal is often used to dust spring bulbs which may encourage digging.
Sources
This page is informational and is not veterinary advice. If your pet has been exposed to something risky, contact your vet or an animal poison control line right away.