It is impossible to tell from an image and often from looking at the sculpture.
My early work was all made by me in resin bronze which can be done with no special facilities except a fan helps with the smell. I specialised in farm animals decades ago, and moved on but these models remained popular.
Later I had most cast in a foundry.
For convenience I have put the bronze sculptures in categories. This is because with such sculptures people are usually interested in a particular animal model. Click on the headings below for details.