If case anyone was wondering, as far as I know the 猎源 means hunting source or hunting origins. So the full name of the game is Seed Hunter Hunting Source.

Yes, 'cat' is 猫, while 'hunting' is 猎. The difference lies in the bottom right vertical stroke and the top right horizontal stroke.

Both characters share the radical 犭, a shortened form of the 'dog' radical (犬), which is commonly associated with animals and animal-like behavior. 猫 (cat) is an animal, which explains the use of 犭. 猎 (hunting) involves animals, particularly hunting animals like dogs or cats, so it also includes the 犭 radical.

edit - and just like GOG's opening post, i have nothing to say about the actual game.

Hmm... Not the Seed Hunter i was thinking of...