This paper reviews the literature on growth in reptiles. The current c
onsensus is that growth data for small and medium-sized reptiles are b
est fitted by logistic-by-mass equations, data for larger reptiles by
the von Bertalanffy equation. Experiments on the relationships between
behavioural thermoregulation, food consumption and growth in both the
laboratory and field are described, and an account is given of some r
ecent work on individual differences in growth rates and their adaptiv
e significance. In general, it may be said that in almost all areas of
biology relating to growth, less is known about reptiles than about e
quivalent phenomena in fishes.