Needleaffer

The needleaffer replaced its ancestor the quileaffer. It doubled in size and now grows needle-like leaves on its back. These work like the leaves on Earth's evergreen trees. The main branch also have a sharp thorn at the end to help protect it from predators. Both males and females now grow a sugar storing hump in their heads. However only males have green stripes on it which they use to attract females with. This hump also hep keep their head warm. Their feet have evolved wooden hoofs which have thorny spikes on the bottom. This helps grip the ice and snow as they walk so they do not slip. They have regained their leg water caring bubbles. However this time it has its own anti-freeze to keep it from becoming a block of ice. Liquid water is not always available in the tundra and they can only eat so much snow before risking lowering their core temperature. Thus when they do find water they will fill up their leg-bubbles. They travel around in herd of 25 to 50 individuals. When it gets cold they will huddle together keeping the juveniles in the center of the herd. This also works well wen defending against predators where they will face their thorny backs outwards. They will lay 3 to 6 wooden eggs at a time. During this time each couple will make their own nest on the ground out of local flora. These nests are kept well insulated from the cold ground and the males will spend much of their time sitting on the nests until they hatch while the female brings him food. Once they hatch the female will look after the nest while the male bring back food for her. Once grown they will all rejoin the herd.