Last reviewed: August 2026
Small amounts of curly (not spring/flat-leaf) parsley are generally fine and even used as a breath freshener for dogs, but larger amounts of spring parsley specifically can be a concern for dogs with kidney issues.
There are two common types of parsley, and they're not treated identically. Curly parsley in small amounts is well tolerated. Spring (flat-leaf) parsley contains furanocoumarins and is more of a concern in large quantities, particularly for dogs with existing kidney disease, where it's generally recommended to avoid regularly.
General veterinary toxicology consensus, cross-referenced against the Merck Veterinary Manual and ASPCA Animal Poison Control Center food hazard references. See How We Source This for our methodology.
This page is general educational information, not a substitute for veterinary advice.