What Are Therians And Other Hearted Anyways? (general overview)

Hello! You can call me Velcro and I am here to inform poeple about therians & other hearted. And if anyone says: 'but Velcro! You can't inform poeple about therians when you aren't one!' Well, rest assured heaps of my effort has been poured into researching therians and I've had all info on therians checked by my therian friend. Anyway, go ahead to dive in!