The wife and I owned a pair of Rottweilers. Huge male and a smaller female. We live in a very rural area that is 95% wooded around us for 1000's of acres. One summer morning we let the Rots outside. Later we notice their gone. And they stay gone all day which was very unusual. Finally on the 3rd day wife was getting out of pool and looked down the driveway and hollered for me. The female was limping badly coming up the driveway. I met her at the deck and she was TORE UP. Both ears were shredded some, half a nose and lots of wounds on the face. Her front left foot had a toe sticking UP. And... it looked like "something" had tried to rip handfuls of fur off on her chest and underside. The male never came home nor did I ever find him.
I put her in the car and took to vet and told him what I knew about the dogs. He treated the female and stated it's more than likely they came across a bobcat kill or her young. I asked if a full grown bobcat could whip 2 Rots? He stated.... "easily". He stated it looks like the cat bite her face, held on, rolled over and raked it's claws on the chest and underside. He said the male was probably disemboweled and dying and the female hung around till he passed. She NEVER left the yard again.