I pulled out my copy of Dansk Glas, and also Glashaandvaerk i Danmark (by the same author, a decade later), and both refer to them as 'Swedish type' decanters.
Kastrup & Holmegaard's Glassworks 1825-71 (again, same author) mentions that the North Jutland glassworks, of which Aalborg was one, often shared many of the same workers, managers and designs - so even within Denmark itself, whilst the decanter might have been well-recorded at Aalborg, it doesn't mean it couldn't have been produced by local glassworks of which little is now known.
It's also mentioned across the different books that many Aalborg glassworkers hailed from Sweden and Germany.
The extent to which quite small differences in form can be used to determine origin when it comes to notoriously wonky pre-war Scandinavian glass is probably up for strong debate - for example, there exists a Holmegaard fyldehund in the factory's own collection that is dramatically different to a Holmegaard fyldehund in the Peter F. Heering collection, illustrated in Danish Glass 1814-1914, on which the eyes, nose and ears do not match at all!
And, of small differences, I would say that yours is not a *perfect* match for the one in the Aalborg collection - the head/body size ratio is a little different, the flattened rim on the nose appears much thicker on yours, and the point of contact between the tail and the back is a lot less refined on yours (the Aalborg one is neater, rounded, and turned up with a small crimp).
But if you want it to be Aalborg, let it be Aalborg - it's really as good a punt as any. Without any provenance, and after a decade of collecting/buying/selling Danish glass, I'd personally just be more cautious/loose in my attribution.