Yer killin' me. An good, old Savage 12ga will do wonders, is cheap, and can be used as a club if you run out of ammo. Tape a maglight under the barrel, and go to work!!
The lynx we get in New Mexico and West Texas have the same basic foot as a Bobcat, only they're larger. Look a lot like a mountian lion. The toes are all rounded, but the pads are flatter and wider on cats than coyotes or dogs. Prairie poodles pads leave a deep indention, even if the claws are not visible on harder ground, and are a more triangular shape. The overall size is usually how we try to tell a difference on the cats. And cats won't be out in the open very much. They'll hang near some kind of cover or at the edge of clearings, and almost always leave some fur on a tree or bush limb. Sometimes you get a big bobcat and small lynx, or very seldom a large lynx and small mountain lion. The lions are typically much deeper as they're much heavier per the size of the foot. The mountain lion cubs are all over the place, coming up from the South. The large males are running the cubs out or killing them. The population is really growing. The state of New Mexico let out 35pairs in Lincoln National Forest a few years ago, and they have decimated the deer populations, to the point resident and land owner deer tags are almost non-existent, as the residents know there are no deer left!! Public lands around Pinion are almost vacant of public hunters the last few years. The drought and lions have taken their toll, and the lions are spreading!! In the state of NM, you have to take a test to get a lisence, and you have to be able to identify a male from female BEFORE shooting it, and after shooting it, physical proof of sex must be left attached to any hides. My thoughts are, "Carry a shovel in your pack, and don't leave tracks!!"

Everywhere I've been out there, if a landowner knows you saw one and could have shot it easily, but didn't, you're not only not welcome on their place anymore, you might have to fight you way out!! Many, many landowners are losing livestock to the bigger cats, especially the sheep men, and they're getting fed up with it!!
Oh, and for night vision :
Thermal Weapon Sight