There are a few reasons why cats might make these noises after using the litter box:
* Relief: Just like humans, cats can feel a sense of relief after eliminating waste. They may express this through vocalizations.
* Attention-seeking: Some cats use vocalizations to get their owners' attention, especially if they want a treat or petting.
* Marking territory: While cats don't howl, they might use their urine or feces to mark their territory. They may chirp or meow to let other cats know they've been there.
It's important to note that:
* Cats don't howl like dogs or wolves.
* The noises they make after pooping are usually normal and shouldn't be cause for concern.
If you are concerned about your cat's behavior, it's always best to consult with a veterinarian.