If the dongtoad is a CIM, then the... fairy? riding the rabbit thing is tiny. If it was human-size, the dongtoad would have been enormous, and therefore hilarious. Boo.
Remember, the dongtoad in question is a
Lesser Ribbed Dongtoad. A Greater Ribbed Dongtoad is the size of a small house, and the plain Ribbed Dongtoad is somewhere in between. They get bigger *suggestive eyebrow waggle*
E: To expand on the biology of the dongtoad, the genus (tentatively named phallophibus) is broadly divided into two groups, the non-poisonous phallophibus erectus (which includes our own Ribbed Dongtoad, as well as luminaries such as the smooth, spotted, and phimosal dongtoads, the latter of which is known for its amazing and variegated frills) and the poisonous phallophibus veneralis (which contain species such as the chlamydian and herpian dongtoads, among others -- it's believed that the non-poisonous spotted dongtoads developed their patterns to mimic the coloration common among veneralis dongtoads).
Most individual species come in plain, lesser, and greater varieties, with the occasional toy-sized dongtoad which are colloquially known as dysfunctional dongtoads, though they are perfectly healthy dongtoads well known for their long life in captivity.
Most smaller (normal and down) dongtoads are primarily herbivorous, with the lesser and dysfunctional dongtoads known to supplement their diet with small insects and nectar or honey, while the larger dongtoads are opportunistic carrion eaters, with larger examples of the greater dongtoad variants known for occasionally creating their own carrion to eat.
They're not particularly well adapted, in general, to direct physical violence, but they're notably quick and agile and surprisingly capable at catching moving targets with their teeth. As such, while even the greater dongtoads aren't particularly capable predators, the genus in general isn't a terribly preyed upon one and the smaller varieties are actually quite good for pest control. If it weren't for their relatively lengthy breeding cycle, they would be a noted overpopulation issue.