Thanks every one of you.
Anyway, just to update you guys on the visit to the vet, the doctors did a thorough checkup and aside from missing a limb and loosing 4.5 pounds, he's in remarkable health. The amputation seems to have been from an animal attack due to the bite marks, most probably from the 5-foot lizards I was talking about earlier. He was lucky not to get an infection and he got the injury about 30 days ago based on the wound. That also meant his journey was definitely a real challenge because he had to compensate the missing limb by hopping and reserving his stamina.
Aside from that, he'll be on medication for a month and is expected to gain his weight and health back within a month.
So there you go guys. Pets, they can be great survivors, so take care of your pets the best way you can.