Cats and dogs have very different nutritional needs, but there are a few simple tips to help you decide what is best for your pet and budget.
1) Feed what you can afford. All types of food have some nutritional value. Raw is often viewed as best, then canned, then dry kibble. Research for the best brands/least recalls.
2) Feed only species appropriate foods to your pets. Non-processed human food is often okay for them. Check an online guide for specific foods that may be harmful.
3) Feed small portions several times per day to maintain a healthy weight.