what can a dog sometimes be taught to do?
Options:
- shake hands
- accident
- guard house
- drink water
- stray Let's think step by step:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Shake hands is clasp someone’s right hand in one’s own at meeting or parting, in reconciliation or congratulation, or as a sign of agreement. A dog sometimes can be taught to shake hands. So, the answer is shake hands.