The Skink was a Canadian self-propelled anti-aircraft gun, developed in 1943–44, in response to a requirement from the First Canadian Army. Due to a lack of threat from the German Luftwaffe, the Skink was cancelled in 1944 after only 3 were built from Grizzly I cruisers. The Grizzly I was a Canadian built M4A1 Sherman tank with some relatively minor modifications.