The present disclosure provides methods for identifying compounds that modulate the activity and/or expression of GPR92, wherein said compounds can be incorporated into flavor compositions that can be used to modify the taste and/or palatability of pet food products. In certain non-limiting embodiments, the present disclosure provides a method for identifying a composition that modulates the activity of a GPR92 receptor comprising (a) contacting a test agent with a GPR92 receptor, (b) determining the activity of the GPR92 receptor, and (c) selecting as the composition, a test agent that increases the activity of the GPR92 receptor.