Colored Rawhide

If you’re dog is not exhibiting anything else but that, meaning vomiting, then it could just be a case of an upset tummy. The rawhide may be a little old already but i don’t think it’s really posinous.

Try checking on this link for some added information:
http://tinyurl.com/5pspvg

The information below can give you an idea of what to do if your dog has more than just an upset stomach

ASPCA Animal Poison Control
Center (888) 426-4435
Dont hope for the best and get the worst.

Acute Painful Abdomen
An acute painful abdomen is an emergency that may lead to death of the dog unless treatment is started at once. The signs of an acute abdomen are the sudden onset of pain, along with whining and crying, retching and vomiting, extreme restlessness and an inability to find a comfortable position, grunting and labored breathing. The abdomen is extremely painful when pressed. Characteristically, the dog may assume a prayer position with his chest to the floor and his rump in the air. As the condition worsens, the dog’s pulse becomes weak and thready, the mucous membranes become pale and the dog goes into shock. If you see any of these signs call an emergency animal hospital at once. Early surgical intervention is life-saving.

One of the following conditions may be the cause of acute abdomen:

Bloat
Urinary stones obstructing the bladder
Trauma to the abdomen with internal injury
Rupture of the bladder
Poisoning
Rupture of the pregnant uterus
Peritonitis
Acute pancreatitis
Intestinal obstruction
Twisting of the intestines

DO NOT INDUCE VOMITING

If the dog has already vomited
If the dog is in a stupor, breathing with difficulty, or shows any sign of neurologic involvement
If the dog is unconscious or convulsing
If the dog has swallowed an acid, alkali, cleaning solution, household chemical or petroleum product
If the dog has swallowed a sharp object that could lodge in the esophagus or perforate the stomach
If the label on the product says, “Do Not Induce Vomiting.”

HOW TO INDUCE VOMITING AND PREVENT POISON ABSORPTION

Induce vomiting by giving the dog hydrogen peroxide. A 3 percent solution is most effective. Give one teaspoon (5 ml) per 10 pounds (4.5 kg) body weight of the dog. Repeat every 15 to 20 minutes, up to three times, until the dog vomits. Walking the dog after giving each dose may help to stimulate vomiting.

Once the poison has been cleared from the dog’s stomach, give him activated charcoal to bind any remaining poison and prevent further absorption. The most effective and easily administered home oral charcoal product is compressed activated charcoal, which comes in 5 gram tablets. The dose is one tablet per 10 pounds (4.5 kg) of body weight.

If activated charcoal is not available , coat the intestines with milk and egg whites using 1/4 cup (60 ml) egg whites and 1/4 cup per 10 pounds (4.5 kg) of body weight. Administer into the dogs cheek pouch using a plastic syringe.

Intensive care in a animal hospital improves the survival rate for dogs who have been poisoned. Intravenous fluids support circulation, treat shock, and protect the kidneys. A large urine output assists in eliminating the poison.
I have obtained this information from www.healthydogexperts.org/id12.html