Trouble making a JSON string -

i'm trying upgrade existing json structure more complex one.

the original idea bunch of x animals, each 1 having bunch of caracteristics:

• animals
  • animal 1
    • claws:4
    • eyes:2
  • animal 2
    • claws:0
    • eyes:6
  • etc.

the json this:

{     "animals":[         {"claws":"4", "eyes":"2"},         {"claws":"0", "eyes":"6"},         etc.     ] } 

so can see, don't name each animal object, caracteristics of animal element of array. can use them in loop animals[x].claws

---

now want add nest each animal, like:

• animals
  • animal 1
    • head
      • eyes:2
      • ears:2
    • body
      • claws:4
      • tails:1
      • legs:4
  • animal 2
    • head
      • eyes:6
      • ears:0
    • body
      • claws:0
      • tails:0
      • legs:8

but didn't manage without naming each animal object (with same name "animal") , using arrays what's in animal:

{     "animals":[         {"animal":[             {"head":                 {"eyes":"2", "ears":"2"}             },             {"body":                 {"claws":"4", "tails":"1", "legs":"4"}             }         ]},         {"animal":[             {"head":                 {"eyes":"6", "ears":"0"}             },             {"body":                 {"claws":"0", "tails":"0", "legs":"8"}             }           ]}     ] } 

i find sucky because:

1) don't need name each animal structure (especially since named "animal") since wanna iterate on them array before;

2) don't need array head , body since know number , names of elements.

i wish use doesn't work:

{     "animals":[         {             {"head":                 {"eyes":"2", "ears":"2"}             },             {"body":                 {"claws":"4", "tails":"1", "legs":"4"}             }         },         {             {"head":                 {"eyes":"6", "ears":"0"}             },             {"body":                 {"claws":"0", "tails":"0", "legs":"8"}             }           }     ] } 

so there way of nesting without using arrays , names?

sure there is! hash key-value pair, , that's why need key, when use {}. array simple collection. {} can't simple collection (that's why had use keys, , latter 1 didn't work, because {} in example simple collection, look: { {}, {}, {} ... }, in case had [ {}, {}, {} ... ]), can make simpler, don't nest many times:

{     "animals":[         {             "head": {                 "eyes":"2",                  "ears":"2"             },             "body": {                 "claws":"4",                  "tails":"1",                  "legs":"4"             }         },         # ...     ] }