Interesting topic. Do zombies breed or can they only turn other humans.

If they can only turn, eventually they wipe out the human race and then slowly starve to death. Are the smart ones like Ink and Randy smart enough to know this? Is that why they have stopped attacking the colony? They have a stockpile of bodies to munch on already and they are leaving the colony alone for now to expand. Leaving it as a grocery store or animal pen type setup. When they run out of bodies in the pantry to feast on they will hit the colony again to stock up?

What if they can breed? Is that where the little ones come from? Are the numbers their 'birth' order? With all the drastic physical changes that Tanya has found in their bodies, perhaps they have an extremely short gestation period. I think Tanya notes diminished sexual organs, but not eliminated, they are still there.

I doubt that part will come into play in our story here but it is something curious to think about. If the biters can't breed at all then it is in their best interest not to wipe out the human race entirely because by doing so they wipe themselves out as well.