Senche-raht

The Senche-raht are a breed of Khajiit that are refered to as "Battlecats" in Mixed Unit Tactics they are described as fearsome and enormous presumably they are stronger and possess more prowess in battle than a standard Khajiit

On the other hand they may just be large Khajiit that have been trained for close quarters combat.

In either case it appears they are the shock troops of the Khajiit peoples.