It's a partially-eaten fish! You can roll in it later, heh heh.
-----
Graystone explained to Cavernledge how wet fur is not a good idea, especially in the winter. He demonstrated how to find rocks and dry patches to cross a creek or a river instead of swimming across it.
Cavernledge felt that she was almost ready to try a real hunt and begged Mudpool to let her. She listened and explained that no matter how talented a pup may be, everyone had to train until they were old enough to move on.
Graystone tied the toy to a string made of straw. He pulled the toy between rocks and bushes and Cavernledge had to pounce and steal it without being detected by Graystone's keen senses.
Cavernledge frantically dug in the soft ground, able to smell the toy but not find it. A little upset, she kept trying for a long while, and Mudpool was impressed with such determination.