"pointed tooth," late 14c., from Latin caninus "of the dog," genitive of canis "dog" (source of Italian cane, French chien), from PIE root *kwon- "dog" (cognates: Greek kyon, Old English hund, Old High German hunt, Old Irish cu, Welsh ci, Sanskrit svan-, Avestan spa, Russian sobaka (apparently from an Iranian source, such as Median spaka), Armenian shun, Lithuanian šuo). The noun meaning "dog" is first recorded 1869.
canine (adj.)
c. 1600, of teeth, from canine (n.) or Latin caninus. Meaning "pertaining to a dog or dogs" is from 1620s.
实用例句
1. Canine teeth are for piercing and killing prey, and tearing flesh.
犬齿用来咬穿、咬死猎物，还可以撕肉。
来自柯林斯例句
2. The fox is a canine animal.
狐狸是犬科动物.
来自《简明英汉词典》
3. She's a specialist in canine psychology and behaviour.