IN a series of threetalks on Thursday afternoons Miss Nancy Rose has dealt with how to look after our dogs. The future talks in this series will advise listeners on the care of other pets, and this afternoon the Assistant Secretary of the R.S.P.C.A. will say a timely word to cat-owners—particularly timely now that the holidays are here and so many people are apt, in sheer thoughtlessness, to leave their cats to that semi-starvation that is euphemistically termed ' foraging for themselves.'