Good Doggo
Following this person’s insane logic, dogs are brainless because they only follow orders. A dog walks on command, and without said command, they’d just be cute paperweights. Obviously, this isn’t true. Dogs have brains. We thought we’d clear that up for anyone who, like the op, was feeling confused.
There are plenty of people out there who can’t speak, but does that mean they’re brainless? And as the OP has helpfully pointed out, having a brain doesn’t mean being intelligent, right? Your dog will walk with you because you’ve trained it to do so. They can be trained because they have a particular organ in their skulls that lets them retain memory and a certain level of knowledge.