How does my dog get worms?

There are 4 common ways your dog can pick up intestinal worms:
1. By swallowing infected fleas while grooming
2. By ingesting worm eggs from a contaminated environment (toys, grass, soil, etc.)
3. By eating or scavenging carcasses of other infected animals (mice, rabbits, birds, etc.)
4. From the mother to her puppies, either across the placenta before they are born, or via her milk when nursing