>>12696957Bear in mind, that many of the kappa's equivalent sin other cultures tend to typically be described with seaweed and algae, which could lead to the inclusion of the Grass type due to plants.
As for Dunsparce, the only piece of evidence that truly relates it to the tsuchinoko is that it's Japanese name is ana anagram, and they both live on the ground - the former of which is a piece of evidence only slightly more tenuous than the "it might be a stinger" that is ebing sued to argue for a manticore evolution in this case.