Nothing says "Merry Christmas" like a dinosaur egg in your stocking! I got one from Santa, so duly read the instructions, put it in a jar of water and stood back to watch it hatch. Three days later cracks started to appear in the shell, and something like a little foot showed. It took about a week until he emerged completely, and he was a bit newborn-slimy for the first couple of days, but not everyone can say they hatched their own baby dinosaur. I call him Reg.
Incidentally I bought another one for the North family.