I'm looking for a word (or term) that specifically and exactly describes someone who loves all living things. I'd prefer something that isn't extremely technical (a word/term hat is mostly understood) but at the same time, not too simple (i.e. animal-lover).
I don't think context is necessary in this case, but regardless…
before going to bed, a teenage girl visits the washroom where she finds a moth. Rather than killing it, she gently releases it outside.
Perhaps this can be described as kind, but I'm looking for something that specifically refers to a love or kindness towards beings of life (except for maybe single-cell organisms).