OK, sooo... i'm just gonna come right out... i think having pets out during infection matches is cheap... along with doners already having OP stuff, they can just bring out a pet for a shield... it's really unfair honestly... if maybe pets during matches could be disabled, that would be nice, because think about it. we already have air-strike spamming, AND the fact that several people camp in one spot and EASILY take out zombies. Why do we need pet shields making it even MORE unfair on the zombies?
well... it's basically this... people who can use pets (mainly two cows stacked on eachother), go to the place they want to camp in, and bring the pet out, using it as a sort of one-way shield. zombies can't hit them, but they can hit the zombies. this happens most commonly in the strong-hold stage, where people get in the webs in the library, and pull out two stacked cows, basically making them almost invincible while that human can still kill zombies. it's basically, like i said a one-way shield.
Dude I already know what it is :p it was a sarcastic "tell me about it", in the same sense as "I know right". This was a problem way back, when pets first came out. I can't believe it's still a problem