(Mishnah): (A Kvi is a crossbreed of a goat and a deer. Chachamim were unsure of its status.) In some ways, a Kvi is like a Chayah. In some ways, it is like a Behemah. In some ways, it is like a Chayah and a Behemah. In some ways, it is not like a Chayah and not a Behemah:

How is it like a Chayah? Its blood must be covered (due to Safek), like a Chayah, but (it is not a Vadai Chayah, so) we do not slaughter it on Yom Tov, and if one slaughtered it on Yom Tov, he does not cover its blood (he may not move ashes, which are normally Muktzah, amidst Safek);

Its Chelev has Tum'as Neveilah, like a Chayah, and its Tum'ah is Safek. (If it is a Chayah, Shechitah permits eating the Chelev, so if it is a Neveilah, the Chelev is Metamei like its flesh.)

One may not redeem a firstborn donkey with it (if it is worth less than the donkey, for this was said only for a Seh (goat or sheep), and perhaps it is not a Seh).

How is it like a Behemah? Its Chelev is forbidden, like Chelev Behemah, but (it is not a Vadai Behemah, so) one is not Chayav Kares for it (for it is a Safek), and one may not buy it with Kesef Ma'aser to eat it in Yerushalayim (we buy only animals proper for Shelamim);

It is obligated in [Matanos, i.e.] the foreleg, jaw and stomach;

R. Lazar exempts, for ha'Motzi me'Chavero Alav ha'Re'ayah.

How is it is not like a Chayah and not a Behemah? It is forbidden due to Kil'ayim (mating or working) with a Chayah, and with a Behemah;

If one wrote [a gift document giving] his Chayos or Behemos to his son, he did not write to him the Kvi. (MAHARA FULDA - some say that even if he wrote both, he gave only Vadai Chayos and Vadai Behemos.)

If one said 'I am a Nazir if this is a not a Chayah or Behemah, he is a Nazir.

In all other ways it is like a Chayah and a Behemah. It requires Shechitah, like this and this. It is Metamei due to Neveilah, and due to Ever Min ha'Chai, like this and this.

(Gemara) Question: What is a Kvi?

Answer #1 (R. Lazar): It is [from a male] goat that mated with a [female] deer, or a male [deer] that mated with a female goat;

Answer #2 (Rabanan): It is a species unto itself, and Chachamim could not decide [its status].

If one redeemed [a Peter Chamor] with a Kvi, he returns and redeems with a Seh. Therefore, if one of them (the Kvi or Seh) died, ha'Motzi me'Chavero Alav ha'Re'ayah. (The Yisrael can say, perhaps the redemption was through the dead one; I let you take it. Until you prove that it was through the live one, you may not take the live one!)

Our Mishnah is unlike R. Lazar, for R. Lazar says, a Kvi, one is liable Asham Taluy for its Chelev (it is Safek Kares).

Question: This Beraisa [of R. Lazar] is unlike Rav, for Rav says, any [Safek] that it is impossible to clarify it, he is not liable Asham Taluy for the Safek!

Answer: [Rav] answers [I hold like] Chachamim (e.g. our Mishnah; they) argue with R. Lazar.

Question: Even when they used to buy [with Kesef Ma'aser] Behemos for Basar Ta'avah (before they decreed to buy only to offer for Shelamim), one may not buy it with Kesef Ma'aser to eat it in Yerushalayim (for one may not eat the Chelev, due to Safek; he wastes Ma'aser. We explained this like HA'GAON RAV C. KANIEVSKY, SHLITA.)

(Mishnah): It is obligated in [Matanos, i.e.] the foreleg, jaw and stomach; R. Lazar exempts.

R. Lazar holds that now we have a Safek about it, so he exempts (ha'Motzi me'Chavero Alav ha'Re'ayah). Rabanan holds that it is a species unto itself, and he is obligated ("Im Seh'' includes it).

Our Mishnah is unlike Rebbi, for a Beraisa teaches, if one was Makdish his Chayos or Behemos, he was not Makdish the Kvi; Rebbi says, he was Makdish the Kvi.

If one said 'I am a Nazir if this is a Chayah', he is a Nazir; 'that this is a Behemah', he is a Nazir; 'that this is not a Chayah', he is a Nazir; 'that this is not a Behemah', he is a Nazir; 'that this is a Chayah and a Behemah', he is a Nazir; 'that this is not a Chayah and not a Behemah', he is a Nazir.

Question (R. Chagai, to R. Yosi): Why was it not taught one who is Rove'a it or Nirva from it (plays the male or female part in bestiality) is liable?

Answer (R. Yosi): The Seifa taught this - in all other ways it is like a Chayah and a Behemah.