Think things is still settling yet and not every pet is widely available yet. Most notably Kovok. Havent seen much to direhorns of late, and people seems to be catching onto that Unborn Val'kyrs are crazy good now.
But people have taken to whine about Xu-Fu already, at least you can only have one of them. But theres plenty of mechanicals due to the direhorn hate, which should keep Xu-Fu in check. But if he becomes prevalent, we might see more evasion pets. Dodge is the perfect counter to Xu-Fu, since it lasts 2 turns, then Xu-Fu's player have nothing to use prowl on, wasting it even if he waits a second turn.
Edit: On second thought, the new Skywisp Moth is a tripple counter to Xu-Fu! Flyer with mechanical damage packing an evasion move!