Comparing poachers to pedophiles may seem like comparing apples and oranges; but like the two fruits, there are more similarities than differences. Both apples and oranges are round, grow on trees, have a skin, contain seeds, are about the same size, etc. By the same token, the poacher and the pedophile both engage in socially unacceptable or illegal behavior for self-serving purposes, without regard for their victims.
Likewise, the catch and release fisherman can be compared to the serial rapist: both put their pleasures over the suffering of their targets. The more their prey struggles, the more exciting the event for the perpetrator. Only when the victim has been completely conquered and has lost all will to fight are they set free, the vanquisher having no more use for them.
And the analogy between a trophy hunter and a serial killer has been well established: both are single-minded in their quest for the kill, placing their own perverse desires above the self-interests—indeed, the very lives—of their victims. Both perpetrators like to take souvenirs from their kills, and neither one cares what the rest of the world thinks of their actions.