One of our cats had recently started running away, sometimes for over a week at a time. I thought a neighbour was trying to adopt her but they've been on holiday this time so she's not been there.
She did come back of her own volition this time (last time was picked up as a stray & taken to the vet). We tried grounding her but she escaped again.
Trouble is, we're thinking of getting a dog & that's not likely to encourage her to stay. We've already told the DCs about a dog and now I really don't know what to do. 
She seems happy enough when she's here but just likes wandering. I don't want to rehome her as she's lovely.
Any ideas for persuading her to stay with us (& how to integrate a dog as possible).