Here is a riser I modeled for a couple cat bowls I have.

Raises the bowl about 3 inches from the ground and holds it at a 15 degree angle to ensure the cat does not have to bend down to eat or drink.

Modeled to fit a bowl with a 115 mm radius "foot".

Dimensions:
Front Leg Height: 75mm (~2.95 in)
Back Leg Height: 120mm (~4.72 in)
Riser Width: 140mm (~5.5 in)

Print amount with PLA at 30% infill without supports: 132g