Yes sabha there are many people who do not have food and shelter in this world. It doesnt mean that you have to leave your pets in the middle of the road. Pets too are part of this world. It is not our individuals duty to take care of the entire world. what one can do is through donation, education etc. one can help as an individual.There are many charity firms in this world UNESCO. etc. is the eg.Even if you contribute one can't make sure that these money are utlised for the same purpose. It is the responsibility of the government's to take care of their people. May be It is because of the dirty politicians there are many who suffer.