Gallas were creatures that only existed in comics.
According to the setting of the comic, the level of Galacticus was: [Capture Level 5]
(Capture Level 1 is defined as a wild beast that can only be captured by ten professional hunters with shotguns.)
This was the position IGO (the fictional organization in "captives of food") gave it. Of course, individual strength would also affect the level of the captured crocodile. There would naturally be a few levels of difference between a young Gala crocodile and a crocodile that had lived for more than a hundred years.
Galas were located in the Baron islands, a dangerous area where about 200000 species of creatures lived. They were at the peak of the local ecosystem.
It had a huge body like a hippopopotamus, a back as hard as a washboard, eight short legs, an ugly and fierce flat face, and a pair of cute eyes.