The quick answer: Technically yes, but it’s best to avoid.
Though peanut butter isn’t unsafe or toxic for cats, it adds nothing to their diet and could (in rare cases) prove dangerous.
Benefits of peanut butter
While humans and dogs can benefit from the nut-based protein of peanut butter, cats can only digest animal-based proteins. In fact, peanut butter does not offer any nutritional value at all to cats.
Peanut butters contain many different types of fats, which can affect cats’ small bodies quite a bit and lead to obesity or diabetes. Ingesting too much peanut butter can lead to vomiting or diarrhea in some cats. Additionally, because of its sticky consistency, peanut butter could be a choking hazard. (Or, just a huge mess.)
In many homes and residential neighborhoods, peanut butter is often used in pest catching devices and traps. Regularly sharing peanut butter with your cat may train him to enjoy it and seek it out. If your cat is trained to enjoy peanut butter, he might end up following the trace of one of these rodent traps and end up getting hurt. For this reason, it’s best to avoid exposing your cat to peanut butter at all.
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