Menachos 13:7

If a person obligates himself to bring a thanksgiving offering or a peace offering, he must bring a sheep. If he knows that he pledged from cattle but he doesn’t remember what, he must bring a bull, a cow, a male calf and a female calf. If he knows that he pledged a herd animal but he doesn’t remember what, he must bring a bull, a cow, a male calf, a female calf, a ram, a ewe, a male and a female kid, a male and a female goat, and a male and a female lamb.

Menachos 13:8

If a person obligates himself to bring an ox, he must bring it with the requisite libations in the total value of a maneh (i.e., 100 dinar). If he pledges a calf, he must bring one with requisite libations in the total value of five sela (20 dinar). If he pledges a ram, he must bring one with requisite libations in the total value of two sela (eight dinar). If he pledges a lamb, he must bring one with requisite libations in the total value of one sela (four dinar). If he pledges an ox worth a maneh, he must bring one that is worth a maneh independent of its libations. Similarly, if he pledges a calf worth five sela, he must bring one that is worth five sela independent of its libations; if a ram worth two sela, he must bring one worth two sela independent of its libations; a lamb worth one sela, he must bring one worth a sela independent of its libations. If he pledges an ox worth a maneh but he brings two that are collectively worth a maneh, he doesn’t fulfill his obligation; this is so even if each of them was only a dinar shy of being worth a maneh. If he pledged a black animal and brought a white one, or vice versa, or if he pledged a large animal and brought a small one, he doesn’t fulfill his obligation. If he pledged a small one and brought a large one, he fulfills his obligation, though Rebbi says that he does not fulfill his obligation.