ציטירנדיקער פּירוש אויף איכה 4:3

ואת הארנבת, “and the arnevet”; some commentators say that this animal is one that are not found as male, [as all the other animals that are mentioned are always mentioned as feminine; Ed.] the same would be true of the bird called בת היענה. The objection raised by some scholars that this cannot be so as we know of masculine יעינים found in deserts (Lamentations 4,3) Those are also feminine, in spite of the masculine endings in their names, as are ,דובים עזים, רחלים גמלים, דובים, shegoats, shecamels, etc.; they all have masculine sounding endings, even though the respective animal in question may be a female specimen.

He equated him with a lion which is the strongest of the animals; and compared him to a young lion, regarding his lightness and alacrity [being] beyond the adult lion. That is why he used two nouns, as "cub" alone is also said about other animals when they are small; as it is stated (Lamentations 4:3), "Even jackals offer the breast, and suckle their cubs." And the intention here is cub of the lion species, and it is a construct phrase. And so did Yonatan ben Uzziel translate, "I compare you, Judah, to a cub that is the child of lions." But to me, it appears that gur is an expression of provoking, [like] the expression, "every day, they provoke (yaguru) wars" (Psalms 140:3); [and] "begin to inherit, and provoke (hitgar) war against it" (Deuteronomy 2:24). And the explanation of "gur lion" is a lion that is provoked, as he is at his most dangerous then.

The Hebrew word unlace also implies “pull off”, as in “pull out the breast” [Lamentations 4: 3].