Amphibious "Ferry" Sniffer Mount

Make the Sniffer among the slower ridable mobs, but also amphibious. When submerged the Sniffer should stick its nose up & out of the water when in water when it swims. it's top half should be above water. It should be led by a stick & a certain type of seed or whatever its food source is. Perhaps it should be able to transport up to 4 players, or 1 & 3 chests, or 2 & 2 chests. Yes, Although a slow ride it should be able to ferry the largest quantity of Players, Mobs, and/or Stuff. No saddle required, just the Sniffers back fur.  Players should be able to sheer the sniffer's back fur, to get a chest or mob off. Unless the Sniffer is submerged, Mobs cannot just walk up & ride. The player would have to lead them onto a raised platform to do so.