how to parse this kind of json array

i have a json array like blew :

      {
  "0": {
    "kind": "mammal",
    "name": "Pussy the Cat",
    "weight": "12kg",
    "age": "5"
  },
  "1": {
    "kind": "mammal",
    "name": "Roxy the Dog",
    "weight": "25kg",
    "age": "8"
  },
  "2": {
    "kind": "fish",
    "name": "Piranha the Fish",
    "weight": "1kg",
    "age": "1"
  },
  "3": {
    "kind": "bird",
    "name": "Einstein the Parrot",
    "weight": "0.5kg",
    "age": "4"
  }
}

i removed an element 'Piranha the Fish' With (UNSET) My json code changed to blow:

{
  "0": {
    "kind": "mammal",
    "name": "Pussy the Cat",
    "weight": "12kg",
    "age": "5"
  },
  "1": {
    "kind": "mammal",
    "name": "Roxy the Dog",
    "weight": "25kg",
    "age": "8"
  },
  "3": {
    "kind": "bird",
    "name": "Einstein the Parrot",
    "weight": "0.5kg",
    "age": "4"
  }
}

when i remove element the counter of the element change to 0,1,3 so now i can't to have full access in my json elements

i want echo value with this code :

for($i=0; $i <$JsonCount-1 ; $i++)
                {
                    echo "Name :";echo $json_cod[$i]['name'];echo "<br/>";
                    echo "Age :";echo $json_cod[$i]['age'];echo "<br/>";
                }

out put :

Name :Pussy the Cat
Age :5
Name :Roxy the Dog
Age :8