Saw this giraffe and thought it was done really well so I read up on it a bit. The artist is Andrew Chase and his website features other Steampunk styled animals, including a cheetah and elephant. The giraffe was built from transmission parts, plumbing pipe and electrical conduit.  The area I found even more exciting was the fact that the giraffe was functional with moving parts and not just a statue. It features fully rotating and locking joints and a neck that can be raised and lowered. The attention to detail is phenomenal, Andrew mentioned that it took around 80 hours to build.
 

Artist Skinz-N-Hydez was working on this ‘Steampunk Leg’ that looks like a prosthetic one, but is actually only a shell. He has finished the job and has added one more creative piece of art to his gallery, which is already full of his earlier works. This 13-14 pound leg might not be functional, but is still appreciable job. You can find pool of his works on deviantART. Most of them are made from brass and leather and are wearable. Read more about it on Atcrux.com.