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Is one allowed to train an animal to do malacha on shabbas (e.g. turn on a light)?

Is it comparable to amira l'nochri (telling a non-Jew to do so), or do we say its mutar altogether?

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If it's OK to use a shabbos goy, it ought to be OK to use a shabbos puppy. – Ernest Friedman-Hill Oct 18 '13 at 3:52
We are commanded that our animals should also rest on Shabbat, while we are not commanded to ensure that a non-jewish stranger must rest. (your non-jewish slaves and servants also must rest) – Menachem Oct 18 '13 at 8:39
@Menachem So what if this is a wild squirrel that comes to visit on shabbas and makes you a pot of coffee? – Charles Koppelman Oct 18 '13 at 14:41
@CharlesKoppelman: I would argue that if you've trained a wild squirrel it is no longer a wild squirrel. – Menachem Oct 18 '13 at 16:09
See the wikipedia article on מְחַמֵּר. – Fred Oct 18 '13 at 17:07

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