Answer the question about text:

Mum tried to convince me it had probably snuck in once I opened it , but I think they are fucking gross and can squeeze through anything . I long for the days we had a rat loose in the house . That was my fault , I adopted him after he was terrorised after my cats and left him for an afternoon in a cardboard box to recover . He promptly escaped and took over the house for a couple of months .

What may have happened if I did n't adopt the rat ?
My cats would have continued bothering him .