Holiday decorations are beautiful, but they could also be very dangerous for your pets, Philadelphia television station WCAU reported.

Doctors at the University of Pennsylvania School of Veterinary Medicine say they see a lot of sick animals this time of year.

Pets get into extra turkey, ham, gravy and cookies and end up with a lot of stomach problems. They also eat dough ornaments off the tree, which are very high in salt and can cause seizures.

Shortstop Macauley, a lively dog, loves Christmas time because people are more likely to drop goodies on the floor, the station said. There are also decorations such as tinsel, which dogs and cats love to eat.

"It gets stuck in the intestines and can saw through them. So, they would need to have surgery. So, persistent vomiting during the holiday season -- particularly if you're seeing an animal vomiting up pieces of tinsel or pieces from the Christmas tree -- I would certainly have that animal into the veterinarian for X-rays," said Dr. Becky Syring, a Penn veterinarian.

Pets also try to eat broken ornaments, which can cut their esophagus and stomach. If they step on the broken ornament it can damage their paws -- especially the hooks.

Christmas lights are attached to cords that should be covered so the pets don't chew on them, the station said.

"If chewed upon when the lights are lit, it can cause a very serious and life-threatening injury to the lungs. Basically, they can get burns in their mouth and they can get fluid accumulating in their lungs, which can be a major emergency for a pet," Syring said.

Poinsettias, mistletoe and holly are all poisonous to cats and dogs. In fact, you should keep them away from all plants, the station said. Also poisonous to your pets are chocolate, Macadamia nuts and alcohol.

"I remember seeing a dachshund a number of years back who drank a Manhattan and came in drunk. He was pretty weak and wobbly, he hiccupped and he wanted to sleep quite a bit in the cage while he recovered from his hangover," Syring said.

Try to keep your pet on his or her regular diet during the holidays and be sure to keep chicken bones away from them, the station said.