[ravagernl]

In case you want to unsummon your pet when entering stealth/prowl/camouflage:

local petName = "White Kitten"
 
local _, class = UnitClass("player")
local stealthBuff = class == "ROGUE" and GetSpellInfo(1784) -- Stealth
    or class == "DRUID" and GetSpellInfo(5215) -- Prowl
    or class == "HUNTER" and GetSpellInfo(51753) -- Camouflage
--  or class == "MAGE" and GetSpellInfo(66) -- Invisibility (not sure if minipet also turns invisible??)
 
local function CheckAndSummonPet()
    if stealthBuff and UnitBuff("player", stealthBuff) and C_PetJournal.GetSummonedPetGUID() then
        -- You have a stealth buff and you have a companion out.
        DismissCompanion("CRITTER") -- I'm assuming this function still works and is available in combat??
        return
    end
    
    if InCombatLockdown() then
        -- You can't summon a pet in combat from insecure code.
        return
    end
 
    if C_PetJournal.GetSummonedPetGUID() then
        -- You already have a summoned pet.
        return
    end
 
    local _, petGUID = C_PetJournal.FindPetIDByName(petName)
    if petGUID then
        -- Summon the desired pet:
        C_PetJournal.SummonPetByGUID(petGUID)
    end
end
 
hooksecurefunc("MoveBackwardStart", CheckAndSummonPet)
hooksecurefunc("MoveForwardStart", CheckAndSummonPet)
hooksecurefunc("StrafeLeftStart", CheckAndSummonPet)
hooksecurefunc("StrafeRightStart", CheckAndSummonPet)

Note: this is untested