They love plants! This other time I woke up to a noise and realise it was them trying to eat up the Dracaena in the living room haha
I think thats a very common habit of the cats and dogs! They normally do that because it tastes good or because it feels good chewing it (the texture and the feel of fiber in their mouth). I will have to be careful about what plants I home, as some can cause kidney failure and cardiac arrhythmias to cats such as foxglove, lily of the valley, kalanchoe and the Japanese yew!