While some human foods are fine for pets, others, like chocolate, can be deadly to dogs and cats.
For those who keep flower bouquets in the house, eating just one lily can kill a cat. Preservative packets for the water in the vase also can make animals sick if they drink it.
In seven years of emergency veterinary medicine, Zalcman has removed a variety of items from pets, including jewelry, condoms and a new No. 2 pencil with an eraser. Some of her colleagues have retrieved forks and blades, she said.
In Halligan's 24 years as a vet, the most unusual object she had to retrieve from a dog's stomach was a Mickey Mouse hat.
"You could see the plastic parts on the X-ray," Halligan said.