Although Bobcats can be born throughout the year in this area, most are born in the late spring to early summer. The young begin accompanying their mother on hunting excursions at about 3 months, and remain with her until the next litter is born. I imagine this young one has just a couple more months with Mom.
The adult came up the trail first, and from the looks of the "Bobcat Boogie" footshake, possibly stepped in something wet and/or unpleasant on the way.
References:
The American Society of Mammologists Species Account. http://www.science.smith.edu/departments/Biology/VHAYSSEN/msi/pdf/i0076-3519-563-01-0001.pdf
