戇狗 [戆－]

Jyutping ngong6 gau2
Pinyin gàng gǒu

Definitions (Wiktionary)
  1. noun, Cantonese, dialectal
    mad dog; rabid dog
  2. noun, Hokkien
    stupid child (affectionate term used by parents)
    (syn.) 戆囡仔, 戇囡仔, 戆囝, 戇囝