Following the path of my super predator, I thought that one interesting characteristic can be breath while is eating or producing sounds, an addition that could be useful for do not lose time during the alimentation or eat(when I say eat I mean swallow) while is running and for some intelligence comunicate with others or produce sounds to trick the preys. (But also I want genetical modifcated humanoids with a similar characteristic, for this the requirement of the voice).
In simple words I want to know how to separe the respiratory, vocal and ingestive tracts. Working indepently
So, I was considering some options for this but till now dont fill my expectatives:
The whale, in this case I am not sure but remember that whales have differencied plates between the trachea and esophagus, because the trachea is just conected eith the nostrils and the esophagus, so the eating while breathing could be solved, but the comunication still being basic the most time. (I dont know if dolphins with a more complex language have the same system).
The next options were amphibiasn like axolotls, this animals have 3 respiratory systems, lung, dermical and gill respiration, but the dermical is denied when I remembered that this requires a very sensible skin which also makes dehydration a more notorious problem and gills (till where I know) probably can not make atmosferical oxygen exchange.
Then the banshees from avator looked like a good option, but I dont know if a respiratory system like this really could work in phyisical and biological terms of the real life. Because have a respiratory tract divided in two widely separated respiratory passages, in what would be the collarbone and with a head obvioulsy used for feeding and that can produce sounds, this made thought that can inhale by this passages and exhale by the neck and then mouth. And in addition because have wings looks like they do not have problems with the force of the arms Following this concept, the most realistic thing that I found were the Alphynix's land sharks, but they can not exhale by the mouth.
- And as a last option something like the xenomorph respiration. Probably based on insects but upgrade than just be passive, the xenomorphs can take air from their pipes or chimneys, and decide if want exhale from these or for the mouth. But neverless can create a several structural problems to the muscle anchors, bones and the pipes look that can not filter air or be closed (even if in some movies can swim or stay at space). So, the biomechanics still being complicated
So, how could be a good respiratory system that can do at least two of the three proposed actions at the same time? (Would be amaizing if can do three actions at the same time).
And the bigger complications would come if I want specific functions like the super efficient oxygenation of the sauropods, the air sacks from birds, the powerful lungs of cheetahs and horses or the resistance of humans, but I thought I will search solutions then, but if now you have possible solutions do not hesitate to say it.
Maybe I have been too conventional and for that I can not think more alternatives.