I am no expert but I have Mammals of the Northwest by Earl Larrison. It discribes both in detail. The Lynx is slightly larger than the Bobcat. It has huge snowshoe like feet and long silky hair, even from its sideburns. Its top side is grey with shades of yellow, the belly is grey with faint black spots. Black edges its ears and long ear tufts and it has black on the top side of the tip of its tail only. It prefers old growth like dense conifers and thrives on snowshoe rabbits. It is rare or absent in the coastal regions west of the Cascades. This was written in '76 but more recent publications indicate that they have largely receded to Canada.
Bobcats have spots on its body and legs, is more reddish in color, and has black encircling its tail. It has short sideburns and ear tufts and shorter course hair. Its feet are relatively small. It is common in rocky areas, logged over land and second growth areas. This is still probably the animal you saw.

If you can find a zoo in which you can compare the two you would really appreciate the difference. We have an acquaintance who has one of each in the Othello area. He bought them legally from parents bred in captivity. But they are still wild animals.
Carole Louderback
Kennewick
ronald.louderback at verizon.net