What does 狗 mean?
狗 (gǒu) means dog. It is a free word that stands alone: 一只狗 (yì zhī gǒu, “a dog”) is ordinary speech. Common forms include 小狗 (xiǎogǒu, puppy), 狗狗 (gǒugou, the affectionate, child-directed form), 猎狗 (liègǒu, hunting dog), 牧羊狗 (mùyánggǒu, sheepdog) and 狗粮 (gǒuliáng, dog food). Simplified and traditional writing are identical.
狗 and 犬: two words for the same animal, different registers
犬 (quǎn) is the formal and written word for dog, and 狗 is the everyday word. Both mean the same animal, and choosing between them sets the register: 警犬 (jǐngquǎn, police dog), 导盲犬 (dǎomángquǎn, guide dog), 搜救犬 (sōujiùquǎn, search-and-rescue dog) and 犬类 (quǎnlèi, the canine family) all use 犬 because they are formal or technical. Conversation, children’s books and affectionate names use 狗.
This register split has a second consequence: the radical. 狗 carries the 94th Kangxi radical 犬, written 犭 on the left. The same 犭 radical runs through 猫 (cat), 狼 (wolf), 狐 (fox), 猪 (pig) and 猴 (monkey), which groups mammals in a way that is visible in the shapes of the characters rather than only in their meanings.
狗 in the Chinese zodiac
狗 is the eleventh sign in the twelve-animal cycle, after 鸡 Rooster and before 猪 Pig. It corresponds to the earthly branch 戌 (xū). Recent and coming Dog years are 2042, 2030, 2018, 2006, 1994, 1982, 1970 and 1958, continuing back in steps of twelve. The zodiac year follows the lunar calendar and usually begins in late January or February, so a January or early-February birthday needs the exact date checked rather than assumed.
What the tradition says about the Dog sign
Popular sign descriptions present the Dog as loyal, honest, responsible, protective and just, with a tendency towards stubbornness, worry or defensiveness. Those descriptions come from a storytelling tradition and from modern popular writing. They are not measurements, and sources differ in how they rank and phrase them.
The Dog is a good illustration of how thin the evidence is. Its traditional associations come from a working role — guarding the house — and the personality lists built on top of that role change from source to source. The zodiac fixes a year, not a character, and a household that keeps a dog knows more about dogs than the sign does.
Compatibility in the traditional system
Traditional pairing uses the 六合 “secret friend” pairs and the 三合 three-harmony groups. In that system the Dog is paired with the Rabbit, grouped with the Tiger and the Horse, and set opposite the Dragon as the clashing sign.
The pairing rules join branches, not people. 戌 joins 卯 in the 六合 pairs, so the Dog’s partner is the Rabbit. The 三合 trio is 寅午戌 — Tiger, Horse and Dog. The Dog stands opposite 辰, the Dragon, which is the 冲. What the tradition actually fixes is the calendar position; the trait matching that fills popular compatibility articles is written to sound specific and cannot be checked against anything.
Lucky numbers, colours and flowers
Numbers and colours are attached to the Dog by popular writing, with no classical basis and no agreement between sources. The tradition gives the Dog the branch 戌 and its years, and nothing else. If you are designing for a Dog-year recipient, a considered colour choice labelled as a personal one is more honest than a number copied from a list that the next site contradicts.
狗 in idioms and everyday phrases
Many of the classical phrases are unflattering. 狗急跳墙 (gǒu jí tiào qiáng, “a cornered dog jumps the wall”) describes desperation driving someone to extremes. 狐朋狗友 (hú péng gǒu yǒu, “fox friends and dog friends”) describes a bad crowd. 狼心狗肺 (láng xīn gǒu fèi, “a wolf’s heart and a dog’s lungs”) describes cruelty and ingratitude. 狗尾续貂 (gǒu wěi xù diāo, “a dog’s tail added to a sable”) describes a poor addition to something fine. 狗嘴里吐不出象牙 (gǒu zuǐ lǐ tǔ bù chū xiàngyá, “a dog’s mouth cannot produce ivory”) says a coarse person cannot say anything decent. 画虎不成反类狗 (huà hǔ bù chéng fǎn lèi gǒu, “try to paint a tiger and end up with a dog”) describes a botched imitation.
Two-sided tone — and why it matters for a design
The idioms above are genuinely negative, and 狗 is a strong insult in some compounds such as 狗东西 and 狗崽子. At the same time 狗 is the ordinary, warm word for a pet, and 狗狗 is affectionate. Both facts are true at once: the register is set entirely by the phrase and the tone, not by the character.
For a design, 狗 alone in a pet or family context reads warm. 狗 borrowed into an idiom usually does not. When the goal is a friendly zodiac piece, the zodiac reading and the household-animal reading line up; when the goal is a formal or dignified mark, 犬 carries the same meaning with a much more neutral tone, which is why official writing prefers it.
狗 among the six domestic animals
Before the zodiac, the clearest cultural frame for the dog is the 六畜 (liùchù), the six animals a traditional household raised: 马 horse, 牛 ox, 羊 sheep or goat, 鸡 chicken, 犬 dog and 豕 pig. The dog’s role in that list is guarding the house, which is where its traditional association with loyalty and watchfulness comes from — a working role, not a personality claim. That framing is usually more accurate and more useful than a trait list pulled from a horoscope site.