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a hedgehog is + [adj/noun]
hedgehog 是可数名词，表示“刺猬”；首次提及时通常用 a hedgehog。
A hedgehog is a small animal with spines.
刺猬是一种身上有刺的小动物。
豪猪
先理解核心含义，再看它在真实句子里的用法。
豪猪
a relatively large rodent with sharp, stiff bristles mixed into its fur
A hedgehog is a small animal with spines.
刺猬是一种身上有刺的小动物。
A small mammal of the subfamily Erinaceinae, characterized by their spiny back and often by the habit of rolling up into a ball when attacked, native to Afro-Eurasia.
体型较大的啮齿动物,毛发中夹杂着尖锐的竖立刺毛
relatively large rodents with sharp erectile bristles mingled with the fur
A form of dredging machine.
小型夜行性旧大陆哺乳动物,身上覆盖着毛发和保护性刺毛
small nocturnal Old World mammal covered with both hair and protective spines
At the nature reserve, a hedgehog with long sharp quills crossed the trail in front of us.
在自然保护区，一只长着又长又尖的尖刺的豪猪从我们面前穿过了小路。
The zookeeper told us not to touch the hedgehogs because their bristles can hurt.
动物园管理员提醒我们不要触摸那些豪猪，因为它们身上的刚毛可能伤到人。
A hedgehog uses its quills mainly to protect itself from enemies in the wild.
豪猪在野外主要用它的尖刺来保护自己免受天敌的伤害。
hedgehog 是可数名词，表示“刺猬”；首次提及时通常用 a hedgehog。
A hedgehog is a small animal with spines.
刺猬是一种身上有刺的小动物。
这个比喻结构常与 prickly 搭配，形容人脾气不好、难以接近。
He can be as prickly as a hedgehog when he is tired.
他累的时候会像刺猬一样浑身是刺。
在 hedgehog defense 中，hedgehog 作定语，是军事用语，指防御严密的环形阵地。
They set up a hedgehog defense around the town.
他们在镇子周围建立了刺猬式防御阵地。
Not this
I saw two hedgehoges in the garden.
Use this
I saw two hedgehogs in the garden.
英语中可数名词变复数时，hedgehog 以 g 结尾，直接加 -s，而不是加 -es。有些学习者受以 s、x、ch、sh 结尾加 -es 规则的过度泛化影响，误加为 hedgehoges，应改为 hedgehogs。
Not this
I saw hedgehog in the garden.
Use this
I saw a hedgehog in the garden.
hedgehog 是可数名词，单数且不特指时前面需要加不定冠词 a。汉语中没有冠词，学习者常会漏掉，所以应说 a hedgehog。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
刺猬冬眠
Hedgehog hibernation usually begins in late autumn.
刺猬冬眠通常从深秋开始。
花园刺猬
You can attract garden hedgehogs by leaving a pile of leaves.
你可以留一堆落叶来吸引花园里的刺猬。
宠物刺猬
Pet hedgehogs need a specially heated cage.
宠物刺猬需要一个特别加热的笼子。
刺猬救助
She took the injured hedgehog to a local hedgehog rescue.
她把受伤的刺猬送到了当地的刺猬救助中心。
刺猬的刺
Hedgehog spines are made of keratin.
刺猬的刺由角蛋白构成。
刺猬小屋
We placed a hedgehog house under the hedge.
我们在树篱下放了一个刺猬小屋。
刺猬理念
They applied the hedgehog concept to focus on what they do best.
他们运用刺猬理念，专注于自己最擅长的事。
刺猬困境
The hedgehog's dilemma explains why people often keep others at arm's length.
刺猬困境解释了人们为何常与他人保持距离。
狐狸知道很多事情，但刺猬只知道一件大事。
This aphorism from the Greek poet Archilochus was popularized by Isaiah Berlin's essay 'The Hedgehog and the Fox' to describe two styles of thinking.
这句源自希腊诗人阿尔基洛科斯的格言因以赛亚·伯林的散文《刺猬与狐狸》而广为流传，用来形容两种思维方式。
Use hedgehog naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把 hedge（树篱）和 hog（猪）拼在一起：树篱下有只小猪，背上的毛硬成了刺——刺猬。
语域：neutral 常见场景：动物科普、自然纪录片、动物园讲解 该词通常作中性名词使用，多用于动物科普或自然类内容中，语气正式度不高不低。日常口语中也可能出现，但正式学术文献中会选择更精确的物种名称。整体语域比较平稳，没有强烈的情感或文体色彩。
Words ending in -dge (hedge, edge, wedge, ledge, pledge) share the /ɛdʒ/ sound at the start of 'hedgehog'; 'hog' shows the /ɑɡ/ final syllable. Be careful with -og lookalikes like 'dog', 'log', and 'fog'—their standard vowel is /ɒ/ or /ɔː/, not the /ɑ/ in the given pronunciation of 'hog', so they are not reliable rhymes.
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.