I hope it is not a Praetorian, but something new.
Most Alien games have the exact same 8 enemies, but usually less:
facehugger - chestburster - warrior - runner (sometimes) drone (sometimes)- praetorian - predalien (sometimes) - queen.
Time for some new enemies, besides the crusher.
The Capcom AVP Arcade game and AVP Extinction added a LOT of new aliens, and that made it fun.
Aliens take traits from the host species, so the variety should be much more that human and dog born xenomorphs.