Foi a coisa de 4 patas que o limpador estava montando um animal ou um robô?

Um pouco dos dois, na verdade.

O Luggabeast é uma montagem cibernética usada em Jakku.

De O banco de dados de Star Wars

Luggabeast

Cybernetic beasts of burden found on frontier worlds, luggabeasts are a fusion of organic being and mechanical creation, with their heads hidden away behind heavy armor plating and optical instruments. Jakku’s Teedos use luggabeasts as pack animals, calibrating the cyborg creatures’ instruments to find droids and other valuable salvage.

O design, na verdade, vem mais do desejo de usar um certo tipo de tecnologia de fantoches.

De A arte da força desperta :

We were talking to Brian Herring, who is our puppet-performers guy, about the stage play War Horse. "What can we do that uses that technology?" Again, with the beauty of digital technology, we do have the potential for rod removal, leg removal. How far can we push it?"

É chamado de luggabeast e é AMBOS.

Sabemos como é chamado a partir da novelização de Foster:

Reaching the top of a nearby dune, she found herself gazing down at a sight as curious as it was unexpected. Trapped in a net of local organic material, a small spherical droid was attempting to escape its prison, an effort rendered extremely difficult by the fearful mechanical’s total absence of limbs. Mounted atop a squat, four-footed, square-helmeted luggabeast, a native Teedo was struggling to constrain and reel in the legless but overactive and insubordinate droid.

Banco de dados de Star Wars diz o seguinte:

Cybernetic beasts of burden found on frontier worlds, luggabeasts are a fusion of organic being and mechanical creation, with their heads hidden away behind heavy armor plating and optical instruments. Jakku’s Teedos use luggabeasts as pack animals, calibrating the cyborg creatures’ instruments to find droids and other valuable salvage.

Aqui está a imagem do jogo Commando (seu uso nas forças armadas pode explicar a necessidade de armadura)