Despite being so young, Shuckle seems to understand when he is being overworked and treated harshly, when all he wants is to be loved and nurtured by some sort of parental figure. He doesn't like Son of Nightmare's training methods as they are too harsh.Son of Nightmare promised to be more considerate towards Shuckle, but it's hard to say just how much he's eased his regimen for Shuckle. The next time Nidoqueen and Shuckle meet on a picnic get together, though, Shuckle appears to be well.
Shuckle's super tough shell provides an excellent defense, and even at his age, he could withstand just about anything would-be opponents can throw at him. There's likely a future plan Son of Nightmare has in store for Shuckle, you can count on it.