Uniquely toxic to dogs — even a few nuts cause weakness (especially hind legs), tremors, vomiting and hyperthermia. Usually survivable with care, always vet-worthy.
Toxicity is not well documented in cats, but there is no reason to risk it — keep away.
Unknown toxin, dog-specific, reliably causes temporary paralysis-like weakness.
Hind-leg weakness, tremors, vomiting, fever — onset within 12 hours.
Call the vet; most dogs recover fully in 24–48h with support.
ASPCA Animal Poison Control: (888) 426-4435 · Pet Poison Helpline: (855) 764-7661 — 24/7, a fee may apply. Your own vet first when reachable.