How many parvo shots does a dog need before he can walk outside on grass?

There is no requirement for a certain number of parvo shots before a dog can walk outside on grass. However, it is generally recommended that puppies receive a series of three parvo shots, typically starting at 6-8 weeks of age, with the final shot being given at around 16-20 weeks of age.

While parvovirus can survive on surfaces like grass for several months, it is important to note that the risk of infection is highest in areas where there is a high concentration of infected dog feces. By keeping your puppy away from areas with known parvo cases and practicing good hygiene (e.g., washing hands after handling your puppy or after coming into contact with dog feces), you can help protect your puppy from infection.