How would you make the basic ROBLOX drooling zombie not kill other zombies?

I'm trying to make a zombie - type game, and when I test it, it goes well, but the Zombies keep killing each other when they're in a certain radius. Here's the script, and what should I do to prevent this issue?

local zombie = script.Parent

for _, script in pairs(zombie.ModuleScripts:GetChildren()) do
	if not game.ServerStorage:FindFirstChild(script.Name) then
		script:Clone().Parent = game.ServerStorage
	end
end

local AI = require(game.ServerStorage.ROBLOX_ZombieAI).new(zombie)
local DestroyService = require(game.ServerStorage.ROBLOX_DestroyService)


local function clearParts(parent)
	for _, part in pairs(parent:GetChildren()) do
		clearParts(part)
	end
	local delay
	if parent:IsA("Part") then
		delay = math.random(5,10)
	else
		delay = 11
	end
	DestroyService:AddItem(parent, delay)
end

zombie.Humanoid.Died:connect(function()
	AI.Stop()
	math.randomseed(tick())
	clearParts(zombie)
	script.Disabled = true
end)

local lastMoan = os.time()
math.randomseed(os.time())
while true do
	local animationTrack = zombie.Humanoid:LoadAnimation(zombie.Animations.Arms)
	animationTrack:Play()
--	local now = os.time()
--	if now - lastMoan > 5 then	
--		if math.random() > .3 then
--			zombie.Moan:Play()
----			print("playing moan")
--			lastMoan = now
--		end
--	end
	wait(2)
end

You can make a table of lists with the zombie names and make it so a for loop is active on that list then you would simply just let them ignore them. This would be the tricky part but it's possible and very easily done. You can also put them on the same team or tweak their script inside of the model itself. One with the able would look like this:

local tableHere = {
--Zombie Names
}


for i, v in pairs(tableHere) do
-- Run Code and use v to ignore them.
end

Any other ideas go to youtube or developer.roblox / the dev fourm for more information about this topic.