pack up
v. phr.β Β«Some dogs got free on their own and have started to “pack up,” in the militaryβs terminology. The dog packs look cute at first, spaniels and poodles and dobermans all running togetherβuntil they rush at you.Β» ββDogged rescuers” by Helen Kennedy New York Daily News Sept. 19, 2005. (source: Double-Tongued Dictionary)