בבא קמא ב׳Bava Kamma 2

Mishnah 1א׳

כֵּיצַד הָרֶגֶל מוּעֶדֶת. לְשַׁבֵּר בְּדֶרֶךְ הִלּוּכָהּ. הַבְּהֵמָה מוּעֶדֶת לְהַלֵּךְ כְּדַרְכָּהּ וּלְשַׁבֵּר. הָיְתָה מְבַעֶטֶת, אוֹ שֶׁהָיוּ צְרוֹרוֹת מְנַתְּזִין מִתַּחַת רַגְלֶיהָ וְשִׁבְּרָה אֶת הַכֵּלִים, מְשַׁלֵּם חֲצִי נֶזֶק. דָּרְסָה עַל הַכְּלִי וְשִׁבְּרַתּוֹ, וְנָפַל עַל כְּלִי וּשְׁבָרוֹ, עַל הָרִאשׁוֹן מְשַׁלֵּם נֶזֶק שָׁלֵם, וְעַל הָאַחֲרוֹן מְשַׁלֵּם חֲצִי נֶזֶק. הַתַּרְנְגוֹלִים מוּעָדִין לְהַלֵּךְ כְּדַרְכָּן וּלְשַׁבֵּר. הָיָה דְלִיל קָשׁוּר בְּרַגְלָיו, אוֹ שֶׁהָיָה מְהַדֵּס וּמְשַׁבֵּר אֶת הַכֵּלִים, מְשַׁלֵּם חֲצִי נֶזֶק:

In which cases is a foot [considered] warned about breaking caused by normal walking? An animal is [considered] warned to walk normally and to break [things]. If it kicks or pebbles are scattered from under its feet and and it breaks vessels, [the owner] pays half the damage. If it stepped on a vessel and broke it, and [then] it fell on a vessel and broke it, for the first [vessel] he pays full damage, and for the last [vessel] he pays half the damage. Chickens are [considered] warned to walk normally and to break. If a bucket was tied to its foot, or if it hopped and broke vessels, he pays half the damage.

Mishnah 2ב׳

כֵּיצַד הַשֵּׁן מוּעֶדֶת. לֶאֱכֹל אֶת הָרָאוּי לָהּ. הַבְּהֵמָה מוּעֶדֶת לֶאֱכֹל פֵּרוֹת וִירָקוֹת. אָכְלָה כְסוּת אוֹ כֵלִים, מְשַׁלֵּם חֲצִי נֶזֶק. בַּמֶּה דְבָרִים אֲמוּרִים. בִּרְשׁוּת הַנִּזָּק, אֲבָל בִּרְשׁוּת הָרַבִּים, פָּטוּר. אִם נֶהֱנֵית, מְשַׁלֵּם מַה שֶּׁנֶּהֱנֵית. כֵּיצַד מְשַׁלֵּם מַה שֶּׁנֶּהֱנֵית. אָכְלָה מִתּוֹךְ הָרְחָבָה, מְשַׁלֵּם מַה שֶּׁנֶּהֱנֵית. מִצִּדֵּי הָרְחָבָה, מְשַׁלֵּם מַה שֶּׁהִזִּיקָה. מִפֶּתַח הַחֲנוּת, מְשַׁלֵּם מַה שֶּׁנֶּהֱנֵית. מִתּוֹךְ הַחֲנוּת, מְשַׁלֵּם מַה שֶּׁהִזִּיקָה:

In what way is the category of "tooth" presumed to be dangerous? It is expected to eat what is fit for it. An animal is presumed to eat fruits and vegetables. If it eats clothing or utensils [various items], the owner must pay half the damages. In what context is this true? - in the domain of the damaged. However, if it happened in the public domain, the owner would be exempt; except, that is, for the amount of money the owner has now saved in feed cost for the animal, which he should pay back to the damaged party. When is this true? - If the animal ate in the middle of the street, then only that which the owner saved in food-costs need be paid back. But if the animal ate from the side of the street, then the owner must pay full damages. If the animal ate from the entrance of a store, then only that which the owner saved in food-costs need be paid back. But if the animal ate from the store itself, then the owner must pay full damages.