Sophie has an uncanny ability to tell what time it is. Her internal clock (stomach!) always lets her know when it's dinner time,
the same time every day. She and Jack get dry food with a little bit from the can mixed in. When it's time to open a new can,
I call her to me and give her a choice of several flavors, which ever one she noses the most is what she gets. Works for me.

Seems to work for her, too...