Well, that doesn't mean it's not done.

My sister had a few (more than 20 simultaneously) rats.

One rat got stuck with her tail in the cage, and the tail had to be amputated, or the rat would've died. There were a few complications during the operation, and the bill would have skyrocketed to more than 2k€. For a tiny rat.

Needless to say, my sister insisted the operation continue. Rat lived happily for another 18 months