Ignoring the prints of caiman, salamander hounds and swamp-drakes, you find the footprints of three creatures. All three are heavy and have the amphibious feet of bullywugs or grung, with the occasional imprint of front paws; two large creatures and one medium, all with large claws. The large ones disappear fairly quickly into the muck of the swamp after shambling away from the disturbed caches, while the medium feet pad away across the islands, in the same direction of the bullywug under the trees. It looks far too light for the footprints, though.
Your keen eyes pick up not only the still patches of water flanking the island with the bullywug, but pierce the murk to make out slimy blue and red hides lurking under the water.
The little bullywug hunter continues jabbing his spear randomly into the muck, singing a nonsense song in burbling frogspeak.