Experiments confine, torment and terrorize sentient animals to create what they call “animal models” of PTSD.

Tail suspension test involves hanging mice and rats upside down
by taping their tails to a board, where they are left hanging as
they struggle to escape. Desperate animals may try to climb their
tails. Some researchers will insert the tail into a small plastic
cylinder to prevent this. They are left hanging until they stop
struggling, which researchers claim demonstrates despair. Many
animals will experience skin injury on their tails from repeated use
of tape.
CAARE's report,
From Trauma to Treatment, details the sweeping
failure of PTSD experiments on animals to help patients, in contrast
to existing, effective treatments and modalities for human-based
research.
Yet despite the existence of highly successful therapies to treat
PTSD, only 10% of patients currently receive them.
Rather than bridge this gap in access to care, millions of
government dollars continue to fund appalling experiments that
intentionally traumatize animals, claiming to study PTSD.
To do this, scientists confine, torment and terrorize sentient
animals to create what they call “animal models” of PTSD.
Listed below are 10 of these heinous experiments that are so
standardized, researchers have designated names for them.* Keep in
mind that for PTSD research, these procedures are typically carried
repeatedly....
Read the ENTIRE ARTICLE and TAKE ACTION: Ten ways animals are traumatized in PTSD experiments

In underwater trauma, animals are placed in an inescapable tank
of water and forced to swim helplessly with no resting platforms or
sides to cling to. After this, they are then submerged and held
underwater in a metal net for 30 seconds. This slow suffocation is
analogous to torture. Researchers tout that this induces intense
trauma because the animals believe they are going to drown.