I bought 2 of these. One for food and one for water for my kitty who will turn 15 in a few months. I had never heard of whisker fatigue before. However I thought I had noticed she was eating and drinking less lately. When I read about whisker fatigue I thought that might be why. I also thought she might like not having to bend over as far, since she is getting on in years. She really seems to be drinking more water. These don’t hold a lot of water, but I am refilling her dish every morning and every evening. Whereas before with a deeper dish, I left it overnight and could hardly tell she had drunk much at all. This holds maybe a cup of dry food. Highly recommend!