A puppy
who tucks his tail or shrinks away from you is not a safe choice as a pet.
Not exact matches
If you encounter a dog
who cowers away from you with his
tail tucked between his legs, back off.
A dog can be labelled aggressive if, upon intake, he / she cringes,
tucks tail, backs away or tries to hide from humans she / he doesn't know; humans
who grab, tug and roughly handle this sentient being.
At the same time, deciding not to engage with someone
who does have the credentials, or
who can argue at the same level, seems to me to be
tucking your
tail and running.
It wasn't Mr. Hadfield
who tucked -
tail and scurried away.