scritch verb (in the FURRYand PLUSHIE subculture) to gently scratch, claw or paw another’s back or neck, often as a greeting US
I scritch the Lynx gently behind the ears, and Lynx purrs at me. — Jeffrey Young, alt.callahans, 5 September 1990
When furries greet each other they apparently paw each other’s backs like dogs wanting to be let out–this is called scritching. — Tim Fountain, RudeBritannia, p. 156, 2008