John Ford writes,

It seems that Ipswich Hospital in England wants to capitalize on its underutilized XRT facilities to treat animals — presumably on a fee-for-service basis.

…I’m thinking that the calculated price per unit treatment will be less for the pets because the hospital will be limited to charging only what pet owners will be willing to pay out of pocket.

I do believe that there is health insurance for pets, but my guess is that the market is relatively unregulated (nobody lobbying for mandates or forcing insurers to charge the same rate for sick pets as healthy pets). So there probably are all sorts of hypotheses about the economics of health care that could be tested by comparing data on pets with data on humans.