That is so cute. Sometimes dogs lift a paw as an appeasement gesture, which could look like pointing. If my dogs are unsure about something, they may lift a paw. But if you see a bird or something of equal or like interest, maybe that squeaky toy, your dog may well be pointing. It's an instinct in dogs, to one degree or another but sometimes not shown by all of them. It is tracing back to the wolf. Wolves have all the predatory motor patterns; orient, eye-stalk, chase, grab, bite, kill-bite, dissect, consume. And dogs, depending on what humans have selected artificially to make different breeds, will demonstrate some of the predatory motor patterns, some stronger than others. Sometimes some of those are all but vanished. They will show up but usually weakly or non-functionally. It is highly rare for a border collie to kill a sheep for instance. That's on account of domestic dogs' juvenile brains. They're neotenic versions of wolves. Because of their smaller brains and higher levels of happy hormones, even as adults, dogs won't have those predatory patterns nearly as strong or functional as wolves. (long story) But you see border collies herding quite naturally. You see that strong orient, eye-stalk, then the chase but the sequence stops there. They don't go on to grab, bite, kill etc etc. Even my Doberman herded quite strongly, as that breed is made of of many breeds and a few of those are herding breeds.
Anyhow, thanks for bringing this up. That pointing must be part of the beginning of the sequence perhaps.