Don't leave these around. Alcohol can also be poisonous. Aluminum Foil when ingested can cause internal bleeding, and in some cases, even death. It is very sweet tasting. Complications include irreversible kidney damage, coma and death.
Cars can be dangerous in the winter.
Leaving your dog alone in the car can cause freezing or even exposure to dangerous Carbon Monoxide if your car is left running. Christmas Trees and Gifts can result in a very ill pet. The tree and ornaments may be attractive items that your little companion may decide to try to chew or eat. When ingested , tinsel may cause obstruction of the intestines and cut the intestines. Treatment usually requires surgery.