While discussing future sections for animals my husband brought up the fact he doesn't believe we could allow a cow in the area where our septic field is. The tank isn't an issue but just the field itself. It has some of the nicest grass lol so if i was a cow, thats where i would want to go. Dh told me to come on here and ask so I am. Would it damage our field to have a cow or even full grown pigs walking on this area? I know its bad to drive vehicles but they are much heavier. I am looking for either black angus or a jersey cow in the spring so they will not be the heaviest of cows... So keep them off the septic field or is it okay as long as its not a small section towhere they wont spend all their time on it?