GROWTH RATES

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Warm-blooded creatures grow much faster (5 - 10 times) than cold-blooded ones do, and this is reflected most strongly in their bones, as discussed elsewhere under bone structure . Whereas a crocodile under normal circumstances will only grow about 30 cm (1 ft) per year, a young Maiasaura (hadrosaur ) hatchling would reach its full size in about 4 years - a growth rate 5 times faster than a crocodile.

References