Lots of testing - for every single "animal" including insects, of which there are about 1 million species.
Borasaense ba bitsa ditshedinyana tseno tsotlhe ditshenekegi - e leng ditshedi tse dintsi go feta diphologolo tsotlhe - tse di akaretsang mo e ka nnang mefuta e le milione e e itsiweng.