Weird behavior with objects & console.log

This code:

foo = [{id: 1},{id: 2},{id: 3},{id: 4}, {id: 5}, ];
console.log('foo1', foo, foo.length);
foo.splice(2, 1);
console.log('foo2', foo, foo.length);

Produces the following output in Chrome:

foo1 
[Object, Object, Object, Object, Object]  5
    0: Object
    1: Object
    2: Object
    3: Object
    length: 4
    __proto__: Array[0]
     5 (index):23
foo2 
[Object, Object, Object, Object]  4
    0: Object
    1: Object
    2: Object
    3: Object
    length: 4
    __proto__: Array[0]

Fiddle: http://jsfiddle.net/2kpnV/

Why is that?

Answers:

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