We had a heavy cat as a kid. But I swear he was part mountain lion. Completely outdoors the stuff he would catch for us. Birds,rabbits,mice,moles and even grabbed a peasant. Lived 17 years. There will never be another one like him His outdoor night fights were epic. Cats can make some noise when they want too!
Sounds like my red tabby was living a double life! Did you feed him, too? I remember the vet bills, he had a new battle cyst every year.
Tango, your Tang is just big boned like Tinks.