Hyacinth
Not listed does not mean safe.

Plantman · CC BY-SA 4.0 · Photo source · shows: Hyacinthus orientalis
Evidence by animal
| Animal | Verdict | Basis | Plant parts | Sources | Evidence link |
|---|---|---|---|---|---|
| Companion mammals | |||||
| Cats | Cats: ⚠ Toxic | Not specified | ASPCA Toxic and Non-Toxic Plants Poison control | evidence | |
| Dogs | Dogs: ⚠ Toxic | Not specified | ASPCA Toxic and Non-Toxic Plants Poison control | evidence | |
| Horses & livestock | |||||
| Horses | Horses: ⚠ Toxic | Not specified | ASPCA Toxic and Non-Toxic Plants Poison control | evidence | |
| Small mammals | |||||
| Rabbits | Rabbits: ⚠ Toxic | House Rabbit Society: listed as a common toxic plant; rabbit.org: listed as poisonous (not graded); WHRS Class 2: local or weaker toxin | Not specified | House Rabbit Society Rescue/education group House Rabbit Society (rabbit.org) Rescue/education group Wisconsin House Rabbit Society Rescue/education group | evidence |
| Birds | |||||
| Pet birds (general) | Pet birds (general): ! Caution | VCA: on the may-be-poisonous list (not specifically reported) | Not specified | VCA Animal Hospitals Veterinary reference | evidence |
| Reptiles | |||||
| Tortoises | Tortoises: ! Caution | Tortoise Trust: listed as toxic, degree uncertain | Not specified | Tortoise Trust Specialist charity | evidence |
Source excerpts
ASPCA Toxic and Non-Toxic Plants — Cats, Dogs, Horses
poison-control
Toxic to Dogs, Toxic to Cats, Toxic to Horses
Source checked 2026-10-27
Read original sourceHouse Rabbit Society — National Pet Poison Prevention Week — Rabbits
rescue-education
House Rabbit Society: listed as a common toxic plant · House Rabbit Society names the plant (part) in its list of common toxic plants; parts matter (e.g. apple seeds, holly berries).
Common toxic plants and plant parts include agave leaves, apple seeds, buttercup leaves, daffodils, holly (berries), hyacinths, irises, mistletoe (berries), sweet potato, and tomato (leaves)
Source checked 2026-10-27
Read original sourceHouse Rabbit Society (rabbit.org) — Poisonous Plants — Rabbits
rescue-education
rabbit.org: listed as poisonous (not graded) · rabbit.org list "Poisonous Plants" (compiled by the University of Illinois): plants "normally thought to be poisonous"; "others may cause a reaction in some but not in others". Not a graded risk.
Hyacinth
Source checked 2026-10-27
Read original sourceWisconsin House Rabbit Society — Classes of Toxic Plants — Rabbits
rescue-education
WHRS Class 2: local or weaker toxin · Wisconsin House Rabbit Society chapter list (G. Flentke, 2012): Class 2 — "Local toxins": "Allergens, dermal sensitivity toxins, or systemic toxins of lesser strengths" (list heading: "May cause allergic reaction in rabbits. Be cautious."). WHRS adds that, because rabbits inevitably chew items, these toxins "could be more of a problem than the current literature indicates".
Hyacinth
Source checked 2026-10-27
Read original sourceVCA Animal Hospitals — Plants That Are Toxic to Birds — Pet birds (general)
veterinary-reference
VCA: on the may-be-poisonous list (not specifically reported) · VCA: on the list of "many plants which may be poisonous to birds, although it is not exhaustive"; no asterisk, so not specifically reported harmful in birds. VCA notes information is often inferred from other species.
Hyacinth
Source checked 2026-10-27 (source updated Aug 14, 2026)
Read original sourceTortoise Trust — Toxic Plants and Tortoises — Tortoises
specialist-charity
Tortoise Trust: listed as toxic, degree uncertain · Tortoise Trust toxic-plant list (from Highfield 2001): "Some plants on this list may be safely consumed in small or moderate quantities, but may be fatally toxic under certain circumstances or in large doses"; exact degree of toxicity unknown.
Hyacinth
Source checked 2026-10-27
Read original sourceNo evidence collected in this database yet for 17 animals
No evidence collected in this database yet for: Guinea pigs, Hamsters, Rats, Mice, Chinchillas, Ferrets, Parrots (macaws, Amazons, African greys…), Budgerigars (budgies), Cockatiels, Lovebirds, Canaries, Finches, Pigeons & doves, Bearded dragons, Iguanas, Goats, Chickens & other poultry
No supported claim has been collected for these animals. Not listed does not mean safe; do not infer suitability from another species.
Toxic principles
ASPCA, as published: Possibly narcissus-like alkaloids Source
Clinical signs
ASPCA, as published: Intense vomiting, diarrhea, occassionally with blood, depression and tremors. Source
More from veterinary sources
Last verified (ASPCA record): 2026-10-27. Source access dates and limitations.
Similar plants (same family)
Shared family is not a shared verdict. Check each plant separately.