It was a range of animal sculptures from all sorts of materials; old metals, bronze, wicker, etc. Off the top of my head, there was a seahorse, giraffe, elephant and dolphin around the park, as part of a temporary exhibition over the Summer holidays. Along with the seahorse ES has posted, these were the other two:
There were seven sculptures in total: two different seahorses, a dolphin, an elephant, giraffes, a dog and a fish. I uploaded photos of them all into the Animal Art Gallery. It's a shame they weren't on permanent display; I thought they were good.