Fido is a dog’s name that English speakers treat as the typical dog name — the one you put in a joke or a cartoon when you need a dog and you are not being particular. Though actually, very few real dogs are called Fido. It is a stereotype more than a fashion.

Fido這個字Fido is是 a dog's name一個狗名字 that English speakers treat as the typical dog name英語使用者把它當成典型的狗名字 the one you put in a joke or a cartoon就是你在笑話或卡通裡隨便安一個名字時會用的那個 when you need a dog and you are not being particular當你需要一隻狗但不特別講究名字的時候 Though actually不過事實上 very few real dogs are called Fido現實中很少真的有狗叫Fido It is a stereotype more than a fashion它是一種刻板印象，而不是一種流行

The name comes from Spanish or Italian fido, from Latin fidus, “faithful,” which is a kind name for a dog you trust. Some people say it comes straight from the Latin verb “I trust,” but that is probably a story people like more than a careful history.

The name comes from這個名字源自 Spanish or Italian fido西班牙文或義大利文的fido from Latin fidus再往前源自拉丁文fidus “faithful,”意思是「忠實的」 which is a kind name for a dog you trust這對一隻你信任的狗來說是個貼切的名字 Some people say有些人說 it comes straight from它是直接來自 the Latin verb “I trust,”拉丁文動詞「I trust」（我信任） but that is probably a story people like more than a careful history但這比較可能是大家喜歡的說法，而不是嚴謹的字源

The joke is old: even in the 1700s you can find a dog answering to Fido. For a student in Taiwan it is a bit like assuming every dog is 小白 or 旺旺: everyone knows the type, almost nobody’s dog is actually called that.

The joke is old這個玩笑由來已久 even in the 1700s甚至早在1700年代 you can find a dog answering to Fido就能找到叫Fido會回應的狗 For a student in Taiwan對台灣的學生來說 it is a bit like assuming every dog is 小白 or 旺旺這有點像預設每隻狗都叫小白或旺旺一樣 everyone knows the type大家都知道這個刻板印象 almost nobody's dog is actually called that但幾乎沒有誰的狗真的叫這個名字

It is a name, not a word for “dog.”

It is a name它是一個名字 not a word for “dog.”而不是「狗」這個詞本身