How to make pets move around player ?

I mean the player is the center of the circle and the pet will move in a circle. This is my script, pets only follow behind the player

local char = script.Parent.Parent.Parent
local hum = char:FindFirstChild("Humanoid")
local rig = char.Humanoid.RigType
local torso = char:FindFirstChild("Head")
local pet = script.Parent
local maxFloat = 1
local floatInc = 0.025
local sw = false
local fl = 0
while true do
	wait()
	local random = math.random(1,15)
	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-random,2+fl,3)
			pet.BodyPosition.Position = Vector3.new(cf.x,cf.y,cf.z)
			pet.BodyGyro.CFrame = torso.CFrame * CFrame.new(3,0,-3)
		else
			break
		end
	end
end