On his Wikipedia page, in the 1966 - 1975 section it says it took a lot of persuasion to get him to use the wheelchair. This suggests that he wasn't in dire need of it at that point. His first child was in 1967, the last in 1979.
6. Extremely high ammonia levels in the water can damage the outer layer of skin and cause shedding. RES are tolerant of high ammonia levels while map turtles are not, so this problem is more likely to occur with Graptemys species.
Egg binding actually occurs quite frequently in turtles and it can have fatal effects. Egg binding occurs when the female has eggs that she is ready to lay in her body but does not actually release them.One of the primary causes of egg binding is that the female turtle is actually unable to lay her eggs.This can occur if for some reason she has developed oversized eggs. In this case the eggs can be too large to pass through her pelvic bone. Occasionally a female turtle will have sustained an injury to her pelvic bone.gg binding occurs when the female has eggs that she is ready to lay in her body but does not actually release them. One of the primary causes of egg binding is that the female turtle is actually unable to lay her eggs.