Which pred was he on? Both kinds. My vet has advised that if one doesn't work either both or the other one might work.

I've been fattening up Sebastian with "chicken soup". Both boys just love it. It's a good reward for his having his pred twice a day.

Chicken Soup
1 jar chicken broth baby food
1/2 tsp nutracal
1 can vanilla ensure
1/2 cup whipping cream

Smells awful, they love it and it gets them fat really quickly.