As an AI language model, I don't have access to recent data on depression rates for common animal species. However, to give you an idea of what a Python dictionary with parsable JSON format might look like, I can provide a simple example: ``` { "dogs": 0.05, "cats": 0.10, "horses": 0.03, "birds": 0.15 } ``` In this example, each key represents a common animal species, and the corresponding value represents the estimated prevalence of depression among individuals of that species (expressed as a percentage). This is just a hypothetical example, and the actual values may differ based on the source of the data and other factors.