Tree tribbles

These tree tribbles are actually oak galls caused by a parasitic wasp. Galls can be fuzzy or hard-shelled, but they all shelter developing larvae. Unlike the ravenous and fast reproducing fuzzies in Star Trek’s “Trouble with Tribbles,” these fuzzles really don’t hurt anyone.

OAK FUZZ -- Fall is a big time for tree tribbles.
MYSTERY CONES -- These are probably some kind of insect larval casing, but don't have an idea what.