A toy for stimulating the intelligence of dogs, the toy comprising:
- a body formed with an upper-side opening, side surfaces, a base panel projecting laterally on an underside of said body, and an inner space for receiving food rewards therein;
- two partial covering panels closing off said upper-side opening and defining a first functional level, said covering panels having two facing edges disposed at a dog paw-accessible spacing distance from one another and being formed to be slid laterally apart from one another by the dog to fully expose said upper-side opening of said body and to be swiveled into a substantially vertical position parallel to and/or bearing against said two side surfaces of said body;
- an access panel arranged underneath said covering panels and defining a second functional level, said access panel having an upper-side dog paw-accessible or teeth-accessible retaining bracket and at least one recess through which a locking pin, to be removed in advance by the dog, passes and can be lifted upward and out of said body by the dog by way of said retaining bracket;
- a sliding panel disposed underneath said access panel and defining a third functional level, said sliding panel allowing a locking pin to pass and be removed in advance by the dog and at least one special locking pin to pass and be removed by the dog only after deliberate lateral displacement of said sliding panel, said sliding panel being formed with an approximately diagonal and central slot-shaped first diagonal elongated recess having an expansion on both sides;
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- a special locking pin holder or ground panel disposed underneath said sliding panel and defining a fourth functional level, said special locking pin holder or ground panel having a diagonal second elongated recess substantially corresponding to said first diagonal elongated recess of said sliding panel in terms of identical surface area, configuration and identical or similar orientation, by way of which diagonal elongated recess at least one special locking pin which is equipped with a projecting base edge zone and is engaged over by said two-sided, linear edge portions of said first diagonal elongated recess is displaceable in said elongated recess and can only be removed upward via a central expansion, and wherein it is only possible for the sliding panel to be displaceable by the dog and pulled out of the body after a removal of said special locking pin.