Causes of a cat being underweight

• Poor nutrition
• Inadequate feeding amounts for the exercise level of your cat
• A medical condition that makes it difficult for them to absorb nutrients from the food
• A cat moving into their senior years may appear skinnier due to the loss of muscle mass
• They may be dealing with a parasite infestation
• It might be difficult for them to eat due to a problem with their mouth or teeth
• They may now have or have had in the past digestive problems like diarrhoea or vomiting
• Some cats that show anxious behaviours can be a bit skinnier

Underweight cats guide.