1. Theobromine, Caffeine, and Everything Else In-Between
Caffeine Image Source:
The Fool-Proof Way to Not Kill Your Dog!

2. Caffeine FOUND IN: CHOCOLATE
Caffeine is one of the Methylxanthines found in chocolate. Caffeine takes about hours to lose most of its energy, and affects other animals, and humans to an extent. Caffeine is also found in coffee, tea, and soda, and acts as a stimulant.
Caffeine has been linked to reduced minerals, such as calcium, to the body. However, some of these studies show that drinking two tablespoons of milk for every cup of coffee compensates for this loss.
Methylxanthines: A group of stimulants that are derived from Xanthine.

3. Persin FOUND IN: AVOCADO Did You Know?
Persin is the main toxin found in Avocado. Many animals are susceptible to this, specifically other mammals, birds, and fish. However, dogs are relatively resistant as opposed to the aforementioned other animals.
Persin is only found in the plant and stem of the avocado, whereas the rest of the fruit has many helpful minerals for the dog’s body, as well as useful fat.
Did You Know?
Avocado is actually a berry, along with other fruits such as bananas and tomatoes.

4. Theobromine FOUND IN: CHOCOLATE Mini-Quiz #1:
Like Caffeine, Theobromine is found in Chocolate. Unlike Caffeine, Theobromine occurs up to 10 times as much as the former, depending on the plant. Theobromine also last longer in the body, an upwards of 17 hours.
Unlike its brother Caffeine, which depletes minerals that affect the bones, Theobromine affects the rate of heart and brain activity. This, as well as internal bleeding, can be fatal to dogs if unchecked.
Mini-Quiz #1:
Q: Theobromine is classified as a what?
A: Methylxanthine.

5. Thiosulphate FOUND IN: ONION & GARLIC
Thiosulphate is commonly found in foods such as onions and garlic. While small amounts to not harm large breeds, if fed consistently it can be harmful to dogs, sometimes leading to death. Onions contain more Thiosulphate than some other foods such as garlic.
Despite some useful minerals found in onions and garlic vital to the body, Thiosulphate is deadly to dogs, who lack an enzyme to digest them. This leads to bursting red blood cells, and leads to severe damage in the liver.
Enzyme: A large molecule that accelerates the processes of chemicals.

6. Xylitol FOUND IN: GUM & CANDY
Xylitol is most commonly found in chewing gum, although it is also found in some baked goods and candies. In some cases, dogs can take hours to show any symptoms of this, as in some products such as gum, due to processes to slow their absorption into the body.
Dogs who ingest Xylitol experience a surge of Insulin in their body. Insulin is a hormone that affects the blood sugar of animals, and can slow production if the body releases large amounts.
Did You Know?
Despite dogs similarity to other mammals, they are the only ones to have signs of Xylitol Poisoning.

7. Yeast FOUND IN: BREAD DOUGH
Yeast is a common leavening agent, or substance used to make bread rise. Yeast works by replicating itself repeatedly, until it is burned by the bread in the oven. A common byproduct of this is ethanol, which can lead to drunkenness when not cooked off.
Yeast also has harmful effects on the dogs’ body. Ethanol that is produced can lead to Metabolic Acidosis, a condition in which there is too much acid in the body. Despite acids being necessary for reactions with minerals in the body, an excess amount can lead to a coma or even death.
Mini Quiz #2:
Q: How does Yeast reproduce?
A: Asexual reproduction.

8. Taking it Further: What else could you do? Other Harmful Foods:
Many other foods also have toxic effects on dogs, with no apparent explanations! Grapes, a common fruit in household, can cause severe effects in dogs such as renal failure (severe damage to the kidneys) and death. Curiously, they also only appear in some dogs, and have not been reproduced in Labs.
Given what is known about the importance of kidneys, as well as why they fail, it could be vital to understand one of the factors in damage to them in other animals, in addition to acquiring new knowledge.
Other Harmful Foods:
Grapes
Macadamia Nuts
Raisins
Many More!

9. Sources LIST OF SOURCES (MLA)
CAFFEINE, MOLECULE, CHEMICAL STRUCTURE, CHEMISTRY. Digital image. PD 4 PIC. PD 4 PIC, n.d. Web. 1 May 2017.
Sonksen P, Sonksen J (July 2000). "Insulin: understanding its action in health and disease". British Journal of Anaesthesia. 85 (1): 69–79
Spiller, Gene A. (1998). Caffeine. Boca Raton: CRC Press.
"Caffeine Myths and Facts." WebMD. WebMD, n.d. Web. 01 May 2017.
"The TRUTH About Avocados – Are They Bad For Dogs?" IHeartDogs.com. N.p., n.d. Web. 01 May 2017.
Writer, Leaf Group. "Thiosulphate in Dogs." Dog Care - The Daily Puppy. The Daily Puppy, 16 Nov Web. 01 May 2017.
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