Hi Carl,
There is an issue with the conditions in unlocking this trophy, I have a known issues post on it with workarounds from players that may help: [Known Issue] "Two of Each" Trophy Unlocking Issues
You need 2 hogs, 2 boars, 2 snakes and 2 small crabs close to your character on a raft (if your raft is large and they’re at the other side it may be too far and prevent the trophy from unlocking). The requirements need you to sail into a storm but at the moment the weather conditions requirement is glitched. In a number of reports (mentioned in the link above) players have found success in sailing as a storm is starting. Others have found sailing under clear skies has also worked.
If you continue to have issues unlocking this trophy after attempting the workarounds, please let me know.