Due to their higher energy levels you need to ensure your cocker spaniel is getting enough nutrition to keep them healthy and support their active, on-the-go lifestyle. The exact amount you feed your pet depends on their age and size as well as their weight. A growing pup may need more food daily than a senior Cocker, so if in any doubt speak to your vet. But as a general rule, a healthy, active adult Cocker Spaniel will need between 1 ½ and 2 ½ cups of food per day, fed over two meals, one morning, one night. And while the odd daily treat is not going to do any harm, avoid the temptation to overfeed.