Snufkin and Moomin, from Tove Jansson's Moomin series. I even named my cat Snufkin.
'Who Will Comfort Toffle?' by Tove Jansson (translated by Kingsley Hart), published by Schildts, 1960
Moomin looked out of the window. The wind blew the curtains away from the dark into the light.
Moomins by Tove Jansson
tove jansson | Tumblr