Correct feeding

Is it advisable to warm up food from a can kept in the refrigerator?

Yes, especially for cats, which prefer their food as close as possible to body temperature (38°C). NB: this is a “warm” temperature, far lower than that at which we are used to heating our own food.

Can hospitalisation cause an aversion to the food served?

 Yes, particularly through an association of smell and stress. This is why it is advisable to prepare food in a separate place from the kennel. Moreover, hospitalisation in itself is a major cause of stress that may trigger rejection of new food. This makes it preferable to serve the usual food, unless contraindicated for medical reasons. 

Why do dogs reject food after having appeared to like it?

Check first that the dog is not overfed. With a new food, especially if this behaviour occurs after the first mouthfuls, the dog may not appreciate the taste or consistency of food it had first found appealing for its smell. If it is food eaten for several weeks, the dog may actually be seeking foods with high social value, like food obtained by begging from the table. In this case, it is best not to give in.