A little cat has been around the last few days - our elderly moggie has been put-out and slopes off whenever this little one appears. Day before yesterday, she scoffed our cats food (put outside) at an unbelievable rate, poor thing was starving.
We're feeding her and she's currently spent the third night in our utility room in the shoe box (I put down an old thick fleece blanket for her to cozy up to).
She's really tame and allows us to pet her so I can feel that she's skin and bone. Possibly pregnant too (although I'm far from expert) cos her little tum is swollen slightly. I also think she's had an injury at some point and healed without treatment as she walks with quite a 'square', rickety gait 
What shall I do? Do I need to contact anyone to see if she's a missing cat?
Any advice greatly received.