How many babies do you think ssssnakeluvr's (Don's) massive garter (below) will deliver? Let's include all offspring (live and otherwise) in the total. Rossman et al. say that average clutch size for T. radix varies from 9 to 29.5 with significant geographic variation. Don mentioned that litters of over 40 and 50 have been reported and that this female is 21" (53cm) long.