Obviously Tanya had to turn into a tiger so that the writers could avoid actual character/plot development concerning Juudai's defeat of her making him her groom...

And again, poor Misawa.

Taken in by a shapeshifting woman? Now they're borrowing from mythology too? Though usually it's a fox or maybe a yukionna, not...a tiger. A tiger is different. Unfortunately now, following the mythology line of thinking, I'm wondering what Misawa and Tanya's children would have been like DX