I understand the desire on the part of those whose job sometimes requires them to kill an animal to avoid that verb. Kill has a taint of murder. The sheer number of euphemisms suggests a long-running struggle to find something right. I collected them for a while: cull, take, dispatch, remove, lethally remove. As a word person, I balk at euthanize, which implies the relief of suffering, and harvest, which makes animals sound like corn. I heard one person say “use lethal force on,” which seems better suited to SWAT operations and Gary Busey movies.
