Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to keep your pet occupied when you are not at home [title] Give your pet puzzle toys. [step] Toys are one of the best ways to keep your pet occupied when you are not home. Not only do they help him pass the time, but they also keep him physically and mentally stimulated, which is good for his overall health.

Ending1: [substeps] Puzzle toys come in many of a wide variety of colors and sizes that your pet may like. You can purchase ones made especially for your pet at your local pet store or online. Ending2: Puzzle toys, which are available at your local pet store, are toys inside which you hide food. [substeps] Since animals like to work for their food, puzzle toys are a great way to keep your pet busy. Ending3: Make sure your puzzles are small enough for your pet to fit on a table. Your pet could cause serious bodily harm if they dig in the puzzle and try to steal it, so give him a toy that has the size you need. Ending4: Toys also help keep your pet engaged and occupied when you do not return home from work or school. [substeps] A puzzle toy is a fun, novelty toy that your pet can visit you while you are home.

Answer format: ending1/ending2/ending3/ending4