Why?
Cats are obligate carnivores: they get their energy from protein and fat, not sugar. They even lack a working sweet taste receptor, so sugar gives them no pleasure. In small amounts it isn't toxic. But over time, sugar contributes to weight gain, and obesity is a risk factor for diabetes in cats.
How much?
There's no need to give any. If your cat licks a few grains off the table, that's fine; just keep the sugar bowl and very sweet foods out of reach.
The risks
- Diarrhea or vomiting after a large amount
- Weight gain if it becomes a habit
- Higher diabetes risk with obesity
- Xylitol and other sweeteners in sugar-free products
Your cat ate some: what now?
A few grains are no concern. If your cat ate a fair amount, watch it for 24 to 48 hours for vomiting, diarrhea or lethargy, and call your vet if those signs appear. If it was a sweetener like xylitol, call right away.
Better options
To treat your cat, try a cat treat, a small piece of plain cooked chicken or a bit of catnip. And always keep fresh water available.
Common questions
Can cats taste sweet things?
No. Cats lack a working sweet taste receptor, so sugar doesn't taste good to them. When they go for desserts, it's the fat in butter, cream or milk that attracts them.
Are artificial sweeteners safe for cats?
They're not something to share. Xylitol is highly toxic to dogs and, with limited data in cats, is treated as dangerous for them too. Other sweeteners bring no benefit, so keep sugar-free products out of reach.
This information is general and does not replace advice from a veterinarian. If your cat has swallowed something toxic, call your vet or an animal poison control center right away, without waiting for symptoms.