Complex sentence: Lasers have also become a popular plaything for pets and other animals, namely cats and dogs, whose natural prey drive is triggered by the moving laser and will chase it and/or try to catch it as much as possible, but obviously never succeed.
Split into simpler sentences: Lasers have also become a popular plaything for pets and other animals, namely cats and dogs. Animals usually become transfixed on the moving laser and will chase it and/or try to catch it as much as possible, but obviously never succeed.