Why limited
Keep Pesto to small, occasional amounts. Sensitive pets may react to it, and sugar- or fat-heavy foods raise the risk of obesity and pancreatitis.
Built on garlic, which is toxic to dogs and cats, plus pine nuts and cheese.
Dogs and cats carry the same rating (Feed with care), so the notes below hold for either pet.
If it ate some before you noticed, watch for vomiting, diarrhoea, loss of appetite, unusual tiredness or a painful, swollen abdomen over the next 24 hours. A one-off small amount in a healthy adult usually passes with water and rest; repeated exposure, a puppy or kitten, a senior, or a pet with an ongoing illness is a reason to call your vet the same day.
Other foods that need limits
The full A–Z food list groups every food by verdict for each species.
Why these cautions matter
Garlic and onion damage a pet's red blood cells and can bring on anaemia. Signs are often delayed for several days, so looking fine straight afterwards does not rule it out.
Most adult pets make very little lactase, so dairy tends to produce gas, bloating and diarrhoea instead of usable nutrition.
Frequently asked questions
Can cats eat Pesto?
CAUTION — limited. Built on garlic, which is toxic to dogs and cats, plus pine nuts and cheese.
How much Pesto can cats have?
Keep Pesto to small, occasional pieces and never part of the main meal. It is classed as with care, so pets with a sensitive gut, pancreatitis or diabetes should skip Pesto entirely.
What reaction should I watch for after cats eats Pesto?
In the 24 hours after cats eats Pesto, look for vomiting, diarrhoea, gas or a drop in appetite. Built on garlic, which is toxic to dogs and cats, plus pine nuts and cheese.
How often can cats have Pesto?
Save Pesto for rare moments rather than building it into a routine; your cat may enjoy it, but that alone does not make it fit to feed often.
What are safer treats than Pesto for cats?
Pick from the safe list instead — Plain yogurt or Zucchini carry none of the risk that Pesto does, and they work better as an everyday treat.