99 HATCHING STATION. On a shelf is a next of shredded paper holding four eggs, each about the size of a grapefruit. Three have gone bad, but the last holds a pteranodon, which will hatch in 1d3 days and which will imprint on the first person it sees.
Baby Pteranodon (AC 7; MV 1"; HD 1-4 hit points; hp 2; #AT 0; D Nil; XP -)
It will grow to full size in 1 year, assuming it is cared for properly.