One day a male physicist went to check his particle accelerator and somehow got himself tangled up in the mess and he became a female cat with short limbs instead and he/she/it could not remember what happened because his/her/its past had folded into singularity due to this mishap and so he/she/it became good at becoming a cat that he/she/it came to live with us and we have been giving he/she/it catfood ever since.