delete ourDog.bark;
Example:
```js
var ourDog = {
  "name": "Camper",
  "legs": 4,
  "tails": 1,
  "friends": ["everything!"],
  "bark": "bow-wow"
};
delete ourDog.bark;
```
After the last line shown above, ourDog looks like:
```js
{
  "name": "Camper",
  "legs": 4,
  "tails": 1,
  "friends": ["everything!"]
}
```
"tails" property from myDog. You may use either dot or bracket notation.
"tails" from myDog.
    testString: assert(typeof myDog === "object" && myDog.tails === undefined);
  - text: You should not modify the myDog setup.
    testString: 'assert(code.match(/"tails": 1/g).length > 0);'
```