I think if you had the skills to make a game, I'd say go for it! However, I don't think you should exactly copy Feralheart, though making a similar animal game with an original title and such would be fine, and if you really wanted to create a game I think it'd be more fun to have some more creative freedom! Besides, I'm not sure what the staff (or Kov, the original creator) might feel about an FH remake, so I think just a similar animal game would be the best option.
Either way, I wish you luck!