A bunch of tigers Is called an Ambush or Streak.
Tigers in a group are called a "streak', or an "ambush".
Ambush
Depending on your hunting skills: a) either a whole bunch of dead tigers or b) a whole bunch of dead you
place a whole bunch of tigers and you will turn up with a white one
HERD
flock
Flock
herd
bunch
tuft
Bunch
I would call a group of balloons a "bunch"
A group, crowd,
A grovelling of worms.