Most metals are good conductors of heat and they are solids at room temperature. Mercury is the only one in liquid state at room temperature, and has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer. This is the reason behind mercury and alcohol being used in thermometer. Some of the principles of the thermometer were known to Greek philosophers of two thousand years ago.
Veterinary/Medical costs: $160 â 670. The cost of spaying or neutering a dog is $50-200 depending on the size of the dog and whether there are health conditions that can complicate the surgery. A routine veterinary exam runs from $45-150. The cost of puppy vaccinations and boosters is $20-150.
Discounts: 1  Treats can cost anywhere from $2 per bag for simple grain-based treats to $2 -plus each for handmade treats from a dog bakery. 2  The average dog owner spends $77 per year on vitamins, according to the American Pet Product Manufacturers Association. An elderly, sedentary toy breed dog might be able to eat for less than $100 per year, while it could easily cost more than $1,000 to feed a young, very active giant breed dog. 2  The price per day for any given brand is most expensive with the purchase of small bags and least expensive with large bags.