Confusion – Disco Zoo Review

I am completely obsessed with this game and i’m about to beat it, but i swiped over to the office to play funky bus to wait for coins and i saw a black eye peaking out through the office roof like one of the panels is missing? i’m just confused and curious as to what it is. i’ve looked up stuff and i have found no answers can someone please help?
Review by 536!ohx m on Disco Zoo.