One of the more notable aspects about the OVS was that it featured an expansive 'zoo' of hundreds of different organisms, both natural and artificial.
Many of these beasts were relatively harmless, but there was a small proportion of native exobeasts and artificially cultivated designer beasts that were monsters in their own right!
In fact, one of the secret research projects was explicitly set up to develop dangerous artificial warbeasts that could play a useful role in the upcoming war.
It was not common to deploy giant warbeasts into battle. They were expensive and difficult to develop, grow and maintain.
Transportation was another nightmare as beasts designed to destroy mechs could easily destroy cargo vessels from the inside!
Nonetheless, warbeasts could play a useful role on certain planets with rough terrain and adverse conditions.