Save an extremely cute animal or Hitler.
go.
Appealing to empathy isn't going to work with Brett. His sole reasoning for thinking that the worst human should be helped over the best animal is because animals can't become born again Christians. He doesn't believe animals have a soul, and therefore they're objectively less important.
For those of us who live in the real world, life is life. Some of it is more intellectually complex than others, but that doesn't make it more worthy of love or compassion than less advanced beings. Sentience is of obvious practical importance when judging which should be helped in hypothetical situations.
Bottom line - a living creature with a frontal cortex is important, worthy of compassion and love, and worth saving from a fire.