Breeding for traits

[Terry Allan Hall]

No reason this couldn't be done, but it would take several human lifetimes to make much progress given how long it takes them to mature. I definitely see personality traits carried from parent to offspring, but each clutch will also have a lot of personality variation among the individuals.

Agreed,,,while breeding a friendly tortoise to another friendly tortoise, then breeding the friendliest offspring to another friendly tortoise would very likely result in very friendly tortoises, it would quite likely take a VERY long time, indeed!