I've only ever had one big bun and only had her a few months but so far I'd say that she is more laid back in that she isn't easily spooked, she is very friendly and confident (all the giants I have met have been like this and I have worked with a few of them).
She is greedy and has no problems with stealing food from he husbun since she has a much bigger mouth she eats twice as fast as him so if I feed treats then he gets his first and I cuddle her for a bit to give him a head start! She is clumsy and doesn't always know where her feet are! :lol:
She is VERY strong willed and if I don't understand what she wants she will (very rarely) nip, and conti's have big teeth :shock: I find bigger rabbits easier to hold to medicate and health check ect because they are bigger but they are also stronger so if they scrabble or kick you tend to know about it! :lol:
She has arthritis and she is still only young
it's easily controlled with daily metacam but obviously she must still be stiff and uncomfortable
I think giants are prone to it. They are also prone to heart problems as they are just too big really, they also have a much shorter life expectancy
Giant rabbits are fantastic, I feel very lucky to own one but would never buy one from a breeder as I'm not comfortable with animals so prone to breed related illness being bred. There are plenty in rescues though if you are willing to look around and wait!