Maintaining a healthy weight for you pet is just as important as it is for yourself. An animal that is overweight will find life more challenging and will be predisposed to a number of health issues.
The key to maintaining a right weight for your pet is correct feeding. Feed the right amount of food as advised for that breed and build of animal - and stick to it. Do not be tempted to feed more, and definitely do not supplement their diet with human leftovers.
As with us humans, regular exercise will also help. Using toys and games can help stimulate your pet and encourage them to be more active.
One of the best way to keep track of your pet's progress and assess whether they are the correct weight is to know what they weigh.