We've all seen the ads where pets experience visible joy when served an expensive brand of dog or cat food. But do dogs and cats discern flavors, and given the choice, would they prefer Alpo or Cesar to dog crap or dead rats?
Cats and some dogs can be very picky about what they eat. I assume it is due to taste, but I supposed they could also have color, temperature, and texture preferences............like us. ;)
You can tell by what they eat. They eat what they like the taste and smell of, I guess. Or when they are hungry they eat anything that is not nailed down.