My pet script works, but conflicts with players?

https://gyazo.com/928ef93d91a46743e4bab023ad2d387b

what happens ^

my script:

local char = script.Parent.Parent
local hum = char:FindFirstChild("Humanoid")
local torso = char:FindFirstChild("Torso")


local pet = script.Parent


local maxFloat = 1
local floatInc = 0.025
local sw = false
local fl = 0

while true do
	wait()
	if not sw then
		fl = fl + floatInc
		if fl >= maxFloat then
			sw = true
		end
	else
		fl = fl - floatInc
		if fl <=-maxFloat then
			sw = false
		end
	end
	if pet ~= nil and hum ~= nil and torso ~= nil then
		if hum.Health >= 0 then
			local cf = torso.CFrame * CFrame.new(3,2+fl,3)
			pet.BodyPosition.Position = Vector3.new(cf.x,cf.y,cf.z)
			pet.BodyGyro.CFrame = torso.CFrame * CFrame.new(1,0,-3)
		else
			break
		end
	end
end

local weld = Instance.new("Weld", script.Parent)

weld.Part0=script.Parent
weld.Part1=torso
weld.C0 = script.Parent.CFrame:Inverse()
weld.C1 = torso.CFrame:Inverse()

https://gyazo.com/179a0b70be594b97d8c0dd51e1393eb4

^ the hierarchy of my Pet part

i believe it has something to do with coming close to another Torso or humanoid, how can i make it souly attached to a player and not conflict with other players?

Got it to work, so what i had it originally do was in a PlayerAdded function, clone the pet into the player character and let the local script inside the pet do the work for how it follows the player, but what i changed was, inside the Player Added script, i added what was originally in the local pet script into the function and it worked perfect. so it must have been a conflict with two players having a local script. So now its all the server running the pets.