"there's life in the old dog yet" meaning in English

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      "expansion": "there's life in the old dog yet",
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  "lang_code": "en",
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          "ref": "2015 February 23, “Oscars 2015: 10 things we learned”, in The Guardian (London):",
          "text": "It wasn’t quite Sacheen Littlefeather, but a rolling tide of firebrand speeches showed there’s life in the Hollywood dog yet.",
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        "A person's faculties, or an organization's usefulness, should not be written off simply because of age."
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      "id": "en-there's_life_in_the_old_dog_yet-en-phrase-vuWnXszD",
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          "faculties",
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          "usefulness",
          "usefulness"
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          "age",
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      "related": [
        {
          "word": "there's many a good tune played on an old fiddle"
        },
        {
          "word": "you can't teach an old dog new tricks"
        },
        {
          "word": "a creaking door hangs longest"
        }
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "word": "c’est dans les vieux pots qu’on fait la meilleure soupe"
        },
        {
          "code": "es",
          "lang": "Spanish",
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          "word": "el que tuvo, retuvo"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "Translations",
          "tags": [
            "dated"
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          "word": "gallina vieja hace buen caldo"
        }
      ]
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  "word": "there's life in the old dog yet"
}

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      "expansion": "there's life in the old dog yet",
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  "lang_code": "en",
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  "related": [
    {
      "word": "there's many a good tune played on an old fiddle"
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    {
      "word": "you can't teach an old dog new tricks"
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      "word": "a creaking door hangs longest"
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  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "word": "c’est dans les vieux pots qu’on fait la meilleure soupe"
    },
    {
      "code": "es",
      "lang": "Spanish",
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      "word": "el que tuvo, retuvo"
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    {
      "code": "es",
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      "sense": "Translations",
      "tags": [
        "dated"
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      "word": "gallina vieja hace buen caldo"
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  ],
  "word": "there's life in the old dog yet"
}