TOP 5 Things Your Dog Should NOT Eat

1. Caffeine
Caffeine can be found in a lot of foods and beverages, like coffee, tea, cocoa, chocolate, energizing drinks and many more. It is a central nervous system stimulant, and, in large enough quantities, can be lethal for a dog. The bad news is that there is no specific antidote.
A dog that had a lot of caffeine will exhibit rapid breathing, tremors, heart palpitations, bleeding, restlessness. If you see these signs you need to take your dog to the vet immediately. 

2. Alcohol
Sharing your beer with your dog is just as wrong as giving a toddler a shot of tequila. Alcohol has the same effect on a dog's brain and liver that it has on humans, but it takes far less to do its damage.
Just a small amount of alcohol, even in a large breed dog can cause a lot of serious problems: central nervous system depression, vomiting, diarrhea, difficulty breathing, all leading to eventual coma and death.

3. Macadamia nuts
We know today that macadamia nuts are toxic for dogs, but the mechanism of toxicity is yet to be explained. It is certain though, that even a couple of nuts will make the dog ill and that symptoms usually appear about 12 hours after ingestion.
A dog suffering from macadamia nuts poisoning will vomit, have a rapid heart rate and an increased body temperature. You will also probably notice weakness in his hind legs and depression. Muscle tremors can also be present.
The symptoms of macadamia nuts poisoning can be made worse if the dog also had chocolate. In this case, death is a potential risk.

4.Sugar free sweet foods
Some products like candy, diet foods and even toothpaste are sweetened with Xylitol. This substance will cause an increase in insulin level which results in a blood sugar drop.
After eating products containing xylitol a dog will start to vomit. He will be lethargic and seizures may occur. There is also a high risk of liver failure within a few days.

5. Home made food
You may think that cooking for your dog is better than feeding him kibbles. Home made food should be tastier and safer, because you can control the freshness and quality of the ingredients. While it is ok to give your dog, from time to time, a little piece of the steak you are preparing, a regular diet of home made food can deprive your dog of many essential nutrients.
Here are two examples (Source: Waltham pocket book of essential nutrition for cats and dogs):

Recipe 1:  3 parts rice; 2 parts chicken breast; 1 part cooked vegetables.
Dogs need: 1.5 times more Zinc; 36 times more Vitamin E;10 times more Vitamin B.

Recipe 2: 2 parts rice; 1 part steamed fish.
Dogs need: 2 times more fat; 3 times more Zinc; 11 times more Vitamin E; 2 times more Vitamin B12.