The other day I was cleaning Ozzy's out door pool.  I brought the 2 crayfish, 1 fish, and 2 snails in the house and put them in a round single serving microvable bowl.  I put Ozzy in the middle of it. 

 All of a sudden,  Ozzy started spinning like a top.  The crayfish and the fish (food) were swimming along the edge of the bowl, and Oz was in the middle trying to catch them. We all laughed.

The crayfish were dinner that day. 

Sometimes I feed Ozzy bugs that I find in the yard. I always dump them on one of the rocks in the pool.  Ozzy always swims in the water to the highest part of the rock, where it's a straight drop to the water.  He bobs up and down in the water trying to pull bugs from the side and the top of the rock.  I put him on top of the low side of the rock with the bugs once.  He imediatly slid into the water and swam to the other side of the rock to hunt his food.

Ozzy is under water, by the rock I usually put the bugs on.  That is a toy to the right side of the pool.