Yes, other animals have found rather interesting ways to differentiate into genders, IIRC in some cases it's temperature, in others hormones, others do it genet

Yes, other animals have found rather interesting ways to differentiate into genders, IIRC in some cases it's temperature, in others hormones, others do it genetically and I think in a few it's merely "how many females are in my group?", where gender can flip to benefit reproduction.