Does the compression monster ability and narrow frame feat stack?

[trednis]

What is the interaction of the two? Can a creature with both move through a narrow space 1/4 as wide as normal (1/8 the space) without squeezing?

[Titania, the Summer Queen]

Don't see why not, but I am pretty sure, there is no such beast existing..... Yet

[trednis]

Titania, the Summer Queen wrote:

Don't see why not, but I am pretty sure, there is no such beast existing..... Yet

Belt of the Weasel item gives the compression ability.

With both, a large size animal companion could move through a 2.5' wide space with no attack penalty.