1978 January 20, “A Day For Dogs And Dog Lovers”, in Milwaukee Journal:
Some dogs will be back porch familiars — beagles with soulful, Snoopy eyes: Dalmatians with spots; bassets with mitten ears; Siberian huskies with wolfish voices; Collies that look just like Lassie.
2005, Russell Dale Guthrie, The nature of Paleolithic art, page 93:
My daughter calls these "Snoopy eyes" after the childlike presentation of the beagle in Schulz's cartoon Peanuts.
2006 April 14, “Good Grief! A Student Musical.”, in The Virginian Pilot:
Mary Mann, another sophomore, sits on the roof of a red dog house, giving her most enigmatic Snoopy look.
2009, Douglas Hamilton with Babak Azizzadeh, Beverly Hills Beauty Secrets, page 161:
Being excessive or overzealous only gives the patient a surprised “Snoopy” look.
