Recent observations indicate that about half of the dwarf satellite galaxies around M31 orbit in a thin plane approximately aligned with the Milky Way. It has been argued that this observation along with several other features can be explained if these dwarf satellite galaxies originated as tidal dwarf galaxies formed during an ancient merger event. However if dark matter is collisionless then tidal dwarf galaxies should be free of dark matter -a condition that is difficult to reconcile with observations indicating that dwarf satellite galaxies are dark matter dominated. We argue that dissipative dark matter candidates, such as mirror dark matter, offer a simple solution to this puzzle.Recently the discovery of a vast, thin plane of co-rotating dwarf galaxies orbiting the Andromeda galaxy [1] has been reported. It was found that about half of the satellites of the Andromeda M31 galaxy belong to a vast extremely thin planar structure (about 400 kpc in diameter but only about 14 kpc in thickness). The structure is co-planar with the Milky Way to M31 position vector and is almost perfectly aligned with the pole of the Milky Way's disk. Of the 15 satellites in this thin plane, 13 of these were found to be co-rotating sharing the same direction of angular momentum. A similar planar structure but not so extremely thin and not so numerous (nine satellites with one counter-orbiting) was found earlier among Milky Way's dwarf satellites [2]. Such vast coherent planar structures constitutes an interesting puzzle from the point of view of the standard Concordance Cosmology [3].Such structures can be understood if the satellite galaxies originated as tidal dwarf galaxies. It was suggested by Zwicky long ago that new dwarf galaxies can be formed as a result of violent disruptions of galaxies during close encounters [4]. When two galaxies interact, tidal forces rip out matter from the galactic discs thus providing enough intergalactic tidal debris from which new dwarf galaxies (TDGs -Tidal Dwarf Galaxies) are formed. In such a tidal scenario planar distribution of newly formed TDGs as well as their correlated orbital moments are a natural outcome as the TDGs are formed from a common tidal tail in a plane defined by the orbit of the interaction [2]. Interestingly, it was shown that significant amount of counter-orbiting material emerges quite naturally in tidal interactions of disc galaxies [5]. Therefore, a tidal scenario can explain even the existence of the satellites orbiting counter to the bulk of other dwarf galaxies in the planar structure.It was argued [6] that the kinematical and morphological properties of M31 can be explained by assuming a single major merger event at the M31 location about 8.7 Gyr ago during which TDGs have been formed. Further studies revealed that the Milky Way disk of dwarf satellites, the so called Vast Polar Structure, also can be explained through the tidal tail of this ancient merger event [7]. The Vast Thin Disk of Satellites (VTDS) around M31 could have been predicted before its discovery by...