it will mess their brains up before u even realise it, i have been using a laser light to play with my 3 month old lab for the past 3 days to help him stay fit as he won’t be going out on walks till his vaccinations are complete.
when i jokingly told the vet about it he strictly told me to never do it again as it develops some kind of ocd in them and they keep obsessing over every single shadow/reflection they see for the rest of their life.
luckily my baby found out that it was me controlling the light within an hour so he started coming after the toy rather than the light lol
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