That is an
Amanita Muscaria and allegedly poisonous to humans if it is unprepared. Preparating included parboiling which somehow "breaks down" the poison. I am not sure about foxes.
While commonly associated with the more classic psychedelic varieties of fungus, the Amanita Muscaria, when prepared properly, at best seems to put the subject into a hazy, dreamy, sub-psychedelic state.
Fun fact: it was also purported to be used by ancient Vikings to put them in a "berserker" state before battle.
Fly Agaric (Amanita muscaria) - History and Uses - Sacred Earth Ethnobotany Resources