Version #1 (according to Rav Acha - Ameimar): If a female bird became a Tereifah, eggs that were inside at the time are forbidden;

Eggs that formed later are permitted, for Zeh v'Zeh Gorem (something that comes from two sources, one of which (in this case, the father) is permitted) is permitted.

Question (Rav Ashi - Mishnah): They (Rashi - R. Eliezer and R. Yehoshua; Tosfos - Beis Shamai and Beis Hillel) agree that eggs of a Tereifah are forbidden, for they grew inside a forbidden bird.

Answer (Ameimar): That refers to eggs that developed without a male (the hen warmed itself in the earth).

Question: Why didn't he answer that the Mishnah discusses eggs inside the bird when it became Tereifah?

Answer: If so, it should not say that the eggs grew inside a forbidden bird, rather, that they were completed inside a forbidden bird.

Question (Mishnah - R. Eliezer): The child of a Tereifah may not be offered (for a Korban);

R. Yehoshua says, it may be offered.

According to Ameimar, surely they argue about when the mother became Tereifah, and then it became pregnant. R. Eliezer forbids Zeh v'Zeh Gorem, and R. Yehoshua permits.

Summation of question: If so, why do they argue about Korbanos? The argument applies even to Chulin!

Answer: They argue about Korbanos to show the extremity of R. Yehoshua's opinion. The child is Kosher even for a Korban.

Question: They should argue about Chulin to show the extremity of R. Eliezer's opinion, who forbids even Chulin!

Answer: It is better to show the extremity of the lenient opinion.

(Mishnah): They agree that eggs of a Tereifah are forbidden.

This discusses eggs that developed without a male. They are due solely to the mother.

Version #1 is like Rav Acha, who holds like Rav Acha bar Yakov. Ravina argues with Rav Acha bar Yakov, and reported the discussion differently.

Version #2 - Ravina - (Ameimar): If a female bird became a Safek Tereifah, we hold onto eggs that were inside at the time:

If the bird later forms more eggs, all the eggs are permitted. If it does not form more eggs, the (first) eggs are forbidden.

Question (Rav Ashi - Mishnah): They agree that eggs of a Tereifah are forbidden, for they grew inside a forbidden animal.

Answer (Ameimar): This discusses eggs inside the bird when it became Tereifah.

Question: If so, it should not say that the eggs grew inside a forbidden bird, rather, that they were completed inside a forbidden bird!

Answer: Indeed, the Mishnah should say that they were completed inside a forbidden bird.

Question (Mishnah - R. Eliezer): One may not offer offspring of a Tereifah;

R. Yehoshua permits.

According to Ameimar, surely they argue about when the mother became Tereifah when it was already pregnant. R. Eliezer holds that a fetus is like a limb of the mother (when the mother becomes Tereifah, also the fetus is forbidden). R. Yehoshua holds that the fetus is independent.

Summation of question: If so, why do they argue about Korbanos? The argument applies even to Chulin!

Answer: They argue about Korbanos to show the extremity of R. Yehoshua's opinion. The child is Kosher even for a Korban.

Question: They should argue about Chulin to show the extremity of R. Eliezer's opinion, who forbids even Chulin!

Answer: It is better to show the extremity of the lenient opinion.

(Mishnah): They agree that eggs of a Tereifah are forbidden.

This discusses eggs that were inside when it became Tereifah.

Question: What is the reason?

Answer: They are like part of the bird. (They became forbidden with it.) (end of Version #2)

The Halachah is, if a Safek Tereifah male lives 12 months, it is Kosher. If a Safek Tereifah female bears new eggs, it is Kosher.

(Rav Huna): Any creature without bones cannot last 12 months.

(Rav Papa): From Rav Huna's teaching we may derive the coming (second) law of Shmuel.

(Shmuel): If a gourd became wormy while growing, it is forbidden;

Dates that were harvested 12 months ago are permitted. (We assume that any worms inside developed inside and never left. They were not "Shoretz Al ha'Aretz". Rosh (citing Ra'avad) - even though dead worms are forbidden, after 12 months, they are totally dry. They are like earth.)

(Rav): A mosquito does not live more than a day. A fly does not live more than a year.

Question (Rav Papa): People say that a female mosquito rebelled on her husband for seven years because he once enjoyed sucking a man's blood without telling her!

Counter-question (Abaye): People also say that one can hang 60 Manim (huge measures) of iron on a mosquito's stinger. Of course that cannot be. It is too small!

Answer: Rather, relative to its size, one can hang 60 Manim;

Similarly, relative to its lifespan, it rebelled for seven years.

(Mishnah): If an animal has five or three legs, this is a blemish;

(Rav Huna): This refers to the forelegs, but a missing or extra hind leg is a Tereifah.

This is because anything extra is considered as if it is missing.

There was a Chayah with an extra Sanya Divi (blind gut). Ravina ruled that it is Tereifah.

If the two Sanya Divi pour into each other, it is Kosher.

An animal had a conduit connecting the Beis ha'Kosos and the Masas; Rav Ashi was about to rule that it is Tereifah.

Rav Huna Mar bar Chiya: All self-grazing animals have such a conduit!

An animal had a conduit connecting the Beis ha'Kosos and the Keres. Mar bar Rav Ashi was about to rule that it is Kosher.

R. Oshaya: You cannot extrapolate! We said that it is Kosher only when the conduit connects the Beis ha'Kosos and the Masas!

Noson bar Shilo was the chief Shochet of Tzipori. He testified in front of Rebbi that two (beginnings of) small intestines in an animal is Tereifah. In a bird, it is Kosher.

This applies only if they emanate from two places; but if they emanate from one place, and finish within a finger's width, it is Kosher.

(Rav Ami or Rav Asi): It is Kosher only if they later rejoin.

(The other of Rav Ami and Rav Asi): It is Kosher even if they don't later rejoin.

According to the first opinion, they must merge within a finger's width.

Question: According to the second opinion, what is the meaning of 'they finish within a finger's width'?

Answer: They merge at least a finger's width before the rectum.

(Mishnah - R. Yehudah): If the small feathers are missing, it is Tereifah.

(R. Yochanan): R. Yehudah and R. Yishmael agree with each other;

(Mishnah - R. Yishmael): The small feathers join. (Rashi - regarding Chutz li'Zmano, intent to eat these feathers is like intent to eat the meat. Tosfos - they join to the meat to comprise a Shi'ur (the volume of an egg) for Tum'as Ochlim.)

Rejection (Rava): Perhaps they argue with each other!

Perhaps R. Yehudah said only that if the feathers are missing it is Tereifah, for they are needed to protect the skin, but he holds like Chachamim, they are not like meat;

Perhaps R. Yishmael said only that they are like meat, but even without them it is Kosher, for they do not protect the skin!

(Mishnah): The following animals are Kosher:

One that was afflicted by excess blood, or inhaled smoke, or became sick through chills, or ate Hardufni (a poison that kills animals), or ate cat excrement, or drank exposed water (into which snakes may have put venom);

If it ate a poison (that kills people) or was bitten by a snake, it is Kosher, but one may not eat it lest the meat is poisonous.

(Gemara - Shmuel): If Chiltis (a hard, pointy plant) is put down an animal's throat, it is Tereifah, for it will puncture the innards.

Question (Rav Shizbi - Beraisa): If an animal was afflicted by excess blood, or inhaled smoke, became sick through chills, ate Hardufni, or ate cat excrement, drank exposed water, or if Chiltis, Tei'ah or peppers were put down its throat, or it ate poison, it is Kosher;

If it was bitten by a snake or a rabid dog, it is Kosher, but one may not eat it, due to danger.

This Beraisa refutes Shmuel regarding Chiltis, and contradicts the Mishnah regarding poison!

Answer - part 1: Shmuel discusses eating stalks of Chiltis. The Beraisa discusses leaves of Chiltis.

Answer - part 2: The Beraisa discusses poison that kills animals. The Mishnah discusses poison that kills people.

Question: The Beraisa discusses also Hardufni, which kills animals! (Surely, the 'poison' it refers to kills people.)

Answer: It discusses Hardufni and another poison that kills animals.

Question: What is Tei'ah?

Answer (Rav Yehudah): It is the poisonous root of aconite.