| 主权项 |
1. A device for limiting access of an animal, comprising:
a housing having a sidewall defining an opening therein, and a housing interior in communication with the opening wherein the sidewall includes an angled exterior surface comprising a plurality of steps, wherein each step includes a riser, a base joined to the riser, and a lip joined to the base at an angle extending outwardly from the sidewall; and at least one opening-size selectable member comprising a protrusion engageable with the plurality of steps of the housing and adjustable to restrict at least one dimension of the opening to form a modified opening, wherein engagement of the protrusion with a first portion of the plurality of steps forms a first modified opening and engagement of the protrusion with a second portion of the plurality of steps forms a second modified opening, the second modified opening being different than the first modified opening, and the first portion being different than the second portion, and wherein each of the first and second modified openings allow passage of a first animal into the housing interior through the respective first or second modified opening and restrains a second animal from entering the housing interior, the second animal being larger than the first animal. |
