LifeSabre-toothed tigers in ice-age Los Angeles had bad back trouble Back injuries identified from thousands of fossilised bones probably occurred when the cat wrestled large prey such as bison and camels ¿ìè¶ÌÊÓÆµ
LifeSawfish's fearsome snout evolved to be undetectable to prey The snout of the elusive sawfish doesn’t make vibrations that prey fish can detect as it swims – just like a wind turbine blade through air ¿ìè¶ÌÊÓÆµ