My society uses dragons for various tasks. Blacksmithing, mining, warfare, fishing, hunting, carriage pulling/plowing, carrying messages, etc. My dragons have four limbs (2 legs/2 wings), and can get quite large. How might my society hypothetically "De-claw" dragons, especially more aggressive/wild-caught dragons who are not being used for warfare? Potential areas of danger (besides the obvious size) are a scythe-like blade on the end of the tail, the teeth, the fire, the claws, and the horns, which kind of make a spiky, potentially deadly frill. Both permanent (for uses other than warfare) and temporary (for warfare and potentially hunting/fishing) are great.
Edit: Horns and claws grow continuously throughout the dragon's lifetime
Edit #2: People don't have any real opposition to cruelty as long as it won't inhibit the performing of the dragon's task, i.e docking/amputating the tail above the blade if the dragon works in a forge.