animal_crossing animal_genitalia animal_pussy anthro anus bedroom blush bodily_fluids butt canine_genitalia canine_pussy caught clothed clothing detailed_background dildo dildo_insertion dildo_sitting female fur genital_fluids genitals hair inside looking_at_viewer masturbation partially_clothed penetration picture_frame plant presenting pussy raised_tail sex_toy sex_toy_in_pussy sex_toy_insertion solo vaginal vaginal_penetration yellow_body yellow_fur weeml isabelle_(animal_crossing) canid canine canis domestic_dog mammal shih_tzu toy_dog colored colorful detailed digital_media_(artwork) hi_res shaded
[i]Walking in on Isabelle[/i]

Tried some different upscaling options. A bit of lost detail for a bit of clarity, but I think it fits her.