Shaping the future of animal health

After sterilization : general advices to implement !


1 Average of sterilisation rates in UK, Germany, Spain, France and Italy. Survey FACCO-TNS-SOFRES 2014.

2 Cupp CJ et al. Effect of neutering on life expectancy in adult cats. J Vet Intern Med 2014; 28: 1093. (complete publication not found but abstract sent).

3 Hoenig M, Ferguson DC. Effects of neutering on hormonal concentrations and energy requirements in cats. J Am Vet Med Assoc 2002; 63:634-639.

4 Harper EF, Stack DM, Watson TDG, et al. Effects of feeding regimens on body weight, composition and condition score in cats following ovariohysterectomy. J Small Anim Pract 2001; 42: 433-438.



When a cat gains 200 g, it is like a man of 70 kg gaining 3.5 kg. When that same cat is more than 1.5 kg overweight, its weight has increased by 40%! At this stage, it is called «morbid» obesity as it is associated with health problems. This is what happens when a 70 kg individual approaches 100 kg.


  1. Control well the daily ration
    The quantity of kibbles to be given each day should be carefully assessed.

    However, all cats do not derive the same benefit from their diets: a standard ration may not be suitable for all individuals, it must be customized. In addition, if you base the ration on your cat’s actual weight and it is already overweight, your cat can become obese in a few months! It is therefore very important to calculate the ration based on its ideal weight. Ask your veterinarian to estimate the amount of food to be given to your cat to cover its new needs. This ration amount will be reviewed (and possibly corrected) according to changes in your cat’s weight and body condition. A monthly review is recommended. Every day, carefully measure the ration with a measuring cup, or better, weigh the kibbles on a kitchen scale to avoid any risk of error. Over the long term, a few extra grams of kibbles each day weigh heavily in the calorie balance.

  2. Split the distribution of the kibbles

    Nothing prevents you from splitting the ration of your cat into several smaller amounts over the course of the day to respect the “grazing” behaviour of the cat. A cat often likes to spread its consumption by taking several small meals per 24 hours. Splitting the distribution of the food also seems to encourage the physical activity of the cat and helps to stabilize its weight.

  3. Food is not the only treat !

    Do not confuse a request for contact or attention («will you play with me?») from your cat with a request for food. A cat who understands that its owner is ready to feed it whenever it rubs against their legs quickly learns to take advantage of the situation... For the cat to remain at its ideal weight throughout its life, it is necessary that the whole family plays the game. It can be a good idea if only one person is in charge of feeding the animal.

  4. Regularly weigh and and observe your cat

    Few owners regularly weigh their cat and they are unaware that their pet is gaining weight. To monitor the evolution of the weight of your cat after sterilization, weigh it at least twice a month. It is always easier to rectify the situation by reacting early.

    The weighing must always be on the same scale: Weigh yourself holding the cat in your arms, then alone, and calculate the difference. However, it is necessary to have a very sensitive balance, capable of measuring a variation of ± 100 g. If necessary, please ask your vet if you can come regularly to weigh your cat at the clinic.


  5. Regularly evaluate the body condition of your cat

  6. Encourage your cat to exercise

    Do not hesitate to encourage them to play with you, in small sequences of 2-3 minutes repeated over the course of the day. There are a lot of toys available to encourage activity of cats, generally relying on their hunting instinct to interest them. When you’re not there, you can also encourage your cat to expend energyby placing a fraction of its daily rationin a toy that the cat must roll to release the kibbles.

    By «working» to eat, it will not be bored and above all it will expend some calories while trying to extract the kibbles !

  7. Limit the calorie consumption of your cat
    After sterilisation the energy requirement is reduced by 25 to 30%7.

    The option of simply reducing the usual ration you give your cat is to be avoided: it may feel very frustrated at being on a severely reduced ration and will soon be begging for more food. In addition, a significant dietary restriction may also expose the cat to nutritional deficiencies. It must receive all nutritional components essential to its health in sufficient quantity.

    Better to give your cat a food adapted to its new needs, just after sterilization. You can even make the transition a few days before the operation, to avoid stress for your cat due to a change in diet during recovery. A food specially formulated for neutered cats brings fewer calories while allowing to maintain a sufficient ration volume. To lower the energy concentration, this type of food generally contains less fat than a conventional maintenance food.

    7 Hoenig M, Ferguson DC. Effects of neutering on hormonal concentrations and energy requirements in cats.
    J Am Vet Med Assoc 2002; 63:634-639.

A range of 3 products, tailormade for your sterilised cat in order to help it to stay in good health throughout its life.