Check out these links about free-feeding or "grazing", which is leaving food for your pet to eat all day long. Dry food alone is especially risky, as it can lead to all kinds of health problems, such as diabetes, urinary tract obstruction, obesity:

https://www.catster.com/lifestyle/cat-health-food-cats-graze-losing-weight-loss

https://www.petful.com/food/free-feeding-cats/ -- this includes a short video from Jackson Galaxy about free feeding.

Dogs and cats need to eat wet food; as it is so important for urinary tract health, as well as general health. Dr. Lisa Pierson, DVM, says:

Feeding a water-rich diet of canned or homemade food is critical for urinary tract health.
Feeding dry (water-depleted) food contributes significantly to urinary tract diseases.

Here is her article about the subject:

https://catinfo.org/feline-urinary-tract-diseases/#Urethral_Obstruction_-_Opies_Story

Another vet agrees that wet food is essential:

https://healthypets.mercola.com/sites/healthypets/archive/2013/09/09/struvite-stones.aspx

Our pets live such a short time- you might as well feed them a healthy diet and do all you can to give them a happy, healthy life with you.