I was wondering why they all had such high wildness!
I don't know how this fits in with your headcannon but surely quite a few of the smaller/tamer crossbreeds could easily appear as escaped experiments from other labs looking for a new home? Might not be the best solution, I dont know if this would be easy but you could have a submod that reduces the wildness of a lot of the tamer animals for those that dont mind a horde of bizzare creatures turning up unexpectedly.
Also my insectoid rodent suggestion: The Spelosquirrel. Combining the worker drone capacity of a spelopede with the hoarding instincts of a squirrel for maximum hauling capacity.
I don't know how this fits in with your headcannon but surely quite a few of the smaller/tamer crossbreeds could easily appear as escaped experiments from other labs looking for a new home? Might not be the best solution, I dont know if this would be easy but you could have a submod that reduces the wildness of a lot of the tamer animals for those that dont mind a horde of bizzare creatures turning up unexpectedly.
Also my insectoid rodent suggestion: The Spelosquirrel. Combining the worker drone capacity of a spelopede with the hoarding instincts of a squirrel for maximum hauling capacity.