What was named first? K-9 the dog or canine the tooth??

Question: What was named first? K-9 the dog or canine the tooth??
- Keywords:
  dog,
  name,
  tooth
Asked by anon-192243 to Kelly on 14 Nov 2018.
- Kelly Rushton answered on 14 Nov 2018:
  
  I think the canine tooth was probably named after the canine dog, and Im guessing because of its shape – but I could be wrong!

Question: What was named first? K-9 the dog or canine the tooth??