Vorsichtig schiebt die Katze die Tür zum Flur auf.
closed as off-topic by c.p., Hubert Schölnast, guidot, Carsten S, Jan Nov 5 '16 at 15:37
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"Aufschieben" usually means "to postpone" but in this context "to slide open". In my understanding, it implies that the door is a sliding door. Although the author may have intended that the cat pushes a regular door open by squeezing itself through the gap, but it can be expressed better.