Concrete Hippos by Stan Bonnar (b.1948), located at Garth 22, Killingworth. The sculpture is on the Register of Buildings and Parks of Local Architectural and Historic Interest ('Local List') for North Tyneside which states:
The sculptures have been a feature of Killingworth's Garth's estate since the mid-1970s. It is understood that the hippos were installed as part of a local authority housing scheme, however, the designer is, as yet, unknown. It is assumed that they came from the same moulds used by Stan Bonnar for similar hippos in Glenrothes New Town, Fife.