A Wounded Waterfox

For the quest 'A Wounded Waterfox', talk to the bear Park Ranger Viktar (he's holding a shovel and pretty stressed out). Go through his speech prompts until he tells you about the waterfoxes and their cave (not more than a hundred paces from him). There is no direct trail there from the main path but walking behind him, you will find a dirt path quickly and that will bring you to the cave. If you already have found Fooxitar Eggs, you'll be able to finish the quest. If not, keep exploring the woods until you do, then return to the cave. You will see the injured Waterfox to the left, which you cannot interact with, and the trap is to the right. You can interact with the trap, leaving an egg inside for bait. Once you've baited the trap, back up and wait for the waterfox to enter it. Viktar will come to the cave and you can go through several speech prompts with him and after this, he will not have more speech prompts for you until after approaching Nava for the first time. Once you approach Nava, you can return to Viktar and ask him for a letter of recommendation.

Also after completing this quest, in the stream and close to the Great Shade, you will see more waterfoxes in and out of the water, but you still cannot interact with them.