They tend to enjoy showing off their superiority to other specimens, and anyone questioning it will be met with harsh treatment, usually in the form of yelling and screaming, but it can potentially escalate to violence if the lesser specimen is not intimidated into their rightful place. They usually refrain from killing other specimens, even in these scenarios, and prefer to leave them alive after a thorough beating, in order for them to actually learn any kind of lesson.

They are not directly hostile and can even be considered relatively passive, as long as other species play along with their superiority complex. An exception to this behavior is made for 220 specimens, more commonly known as Tiger Sharks. The two species have an extremely intense rivalry, which almost always devolves into fighting. The Squid Dog will likely berate the other specimen first, before they begin to swing. Tiger Sharks, however, may be left alive after this battle, assuming they don't win. They will be sent away in order for them to spread the word of just how much more powerful Squid Dogs are than them. Not that this ever happens, but Squid Dogs like to think that it does.

Squid Dogs are biologically omnivorous, but they will always choose meat based meals, and may even flat out deny other food types if they are not desperate for something to eat. They will go through far more effort in order to get meat instead of anything else, no matter how difficult the task may be. While they can eat most things, they experience something similar to an allergic reaction when consuming grapes and chocolate, which may be enough to take the giant down if too much of these substances are consumed. However, given that these creatures experience a massive appetite, they have the potential to resort to cannibalizing other specimens in order to satisfy their hunger.