Where one claimant is riding and one is leading: Bava Metzia 2a
Where one pulls and the other leads: Bava Metzia 8b-9a
Where both are leading a donkey: Bava Metzia 8b-9a
Where both are leading a camel: Bava Metzia 8b-9a
Whether riding constitutes Acquisition: Bava Metzia 8a-9a
Where both claimants are riding the animal: Bava Metzia 2a, 8a [2x], 8b
Where one is riding and one is leading: Bava Metzia 2a
Where one is riding and one is holding the reins: Bava Metzia 9a