O'Fallon, MO
Post Office Box 113
Heartland Humane Society of Missouri is a dedicated non-profit organization committed to giving abandoned, abused, and unwanted animals a second chance at a loving, permanent home. Operating under a no-kill philosophy, we facilitate adoptions and actively work to reduce pet overpopulation in our community. We achieve this by collaborating with veterinarians and other animal welfare organizations to provide affordable spay/neuter procedures and humane education. Our mission extends to all animals in need within the O'Fallon, MO area, ensuring a brighter future for countless pets.
Found a lump on your dog? Learn when to worry and when to wait for a lump on my dog, especially for adopted pets with unknown histories.
Looking for the best automatic dog feeder? We reviewed the top 3 models for every budget. Find the perfect feeder for your dog in 2026.
Is your rescue dog peeing in the house? Learn common causes, a 30-day potty training plan, and expert fixes for house-soiling issues.
Dog reverse sneezing can be scary, but it's usually a harmless reflex. Learn what causes it, how to help your dog, and when to seek vet care.
