{"id":"arrowhead-plant","common_names":["Arrowhead Plant","Arrowhead Vine","Nephthytis","Goosefoot Plant","Trileaf Wonder"],"scientific_name":"Syngonium podophyllum","urls":{"plant":"https://verdapaw.com/plants/arrowhead-plant","cats":"https://verdapaw.com/plants/arrowhead-plant/cats","dogs":"https://verdapaw.com/plants/arrowhead-plant/dogs","data":"https://verdapaw.com/plants/arrowhead-plant/data.json"},"toxicity":{"cat":{"severity":2,"grade":"S2 Irritant","verdict_sentence":"Arrowhead plant (Syngonium podophyllum, also sold as nephthytis) is an irritant to cats (S2 Irritant): its insoluble calcium oxalate crystals cause oral pain and swelling, drooling, vomiting, and difficulty swallowing when chewed, and Pet Poison Helpline adds throat and skin irritation — the same mechanism as pothos and philodendron.","toxic_principles":["insoluble calcium oxalates"],"toxic_parts":["plant tissue — crystals released when chewed"],"symptoms":[{"sign":"oral irritation; intense burning and irritation of the mouth, tongue, and lips","onset":"not specified in source"},{"sign":"pain and swelling of the mouth, tongue, and lips","onset":"not specified in source"},{"sign":"throat irritation","onset":"not specified in source"},{"sign":"skin irritation","onset":"not specified in source"},{"sign":"excessive drooling","onset":"not specified in source"},{"sign":"vomiting","onset":"not specified in source"},{"sign":"difficulty swallowing","onset":"not specified in source"}],"sources":[{"url":"https://www.aspca.org/pet-care/aspca-poison-control/toxic-and-non-toxic-plants/arrow-head-vine","name":"ASPCA","accessed_at":"2026-09-28"},{"url":"https://www.aspca.org/pet-care/aspca-poison-control/toxic-and-non-toxic-plants/nephthytis","name":"ASPCA","accessed_at":"2026-09-28"},{"url":"https://www.aspca.org/pet-care/aspca-poison-control/toxic-and-non-toxic-plants/green-gold-naphthysis","name":"ASPCA","accessed_at":"2026-09-28"},{"url":"https://www.petpoisonhelpline.com/poison/arrowhead-vine/","name":"PPH","accessed_at":"2026-09-28"}],"reviewed_by":"Zhe Li","reviewed_at":"2026-09-28"},"dog":{"severity":2,"grade":"S2 Irritant","verdict_sentence":"Arrowhead plant (Syngonium podophyllum, also sold as nephthytis) is an irritant to dogs (S2 Irritant): its insoluble calcium oxalate crystals cause oral pain and swelling, drooling, vomiting, and difficulty swallowing when chewed, and Pet Poison Helpline adds throat and skin irritation — the same mechanism as pothos and philodendron.","toxic_principles":["insoluble calcium oxalates"],"toxic_parts":["plant tissue — crystals released when chewed"],"symptoms":[{"sign":"oral irritation; intense burning and irritation of the mouth, tongue, and lips","onset":"not specified in source"},{"sign":"pain and swelling of the mouth, tongue, and lips","onset":"not specified in source"},{"sign":"throat irritation","onset":"not specified in source"},{"sign":"skin irritation","onset":"not specified in source"},{"sign":"excessive drooling","onset":"not specified in source"},{"sign":"vomiting","onset":"not specified in source"},{"sign":"difficulty swallowing","onset":"not specified in source"}],"sources":[{"url":"https://www.aspca.org/pet-care/aspca-poison-control/toxic-and-non-toxic-plants/arrow-head-vine","name":"ASPCA","accessed_at":"2026-09-28"},{"url":"https://www.aspca.org/pet-care/aspca-poison-control/toxic-and-non-toxic-plants/nephthytis","name":"ASPCA","accessed_at":"2026-09-28"},{"url":"https://www.aspca.org/pet-care/aspca-poison-control/toxic-and-non-toxic-plants/green-gold-naphthysis","name":"ASPCA","accessed_at":"2026-09-28"},{"url":"https://www.petpoisonhelpline.com/poison/arrowhead-vine/","name":"PPH","accessed_at":"2026-09-28"}],"reviewed_by":"Zhe Li","reviewed_at":"2026-09-28"}},"license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/","terms":"Free to reuse with attribution to Verdapaw and a link to the plant page."},"cite_as":"Verdapaw Plant × Pet Safety Index, verdapaw.com/plants/arrowhead-plant, reviewed 2026-09-28"}