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Do Pigs Have Menstrual Cycle?

January 24, 2024 by Maria LaPaige

Do Pigs Have Menstrual Cycle? oestrous cycle Do pigs bleed monthly? Female guinea pigs have estrous cycles in which they go into heat several times a year for several days, with different stages. However, they don’t experience bleeding or periods as in a menstrual cycle. While they are in heat, they are fertile and go

Can A Fish Have A Period?

January 24, 2024 by Carlos Perez

Can A Fish Have A Period? Fish do not have periods. They have internal sexual organs and ovaries that produce unfertilized eggs once a year. When the eggs have matured, the female will eject them into the water for external fertilization by the male. This process, called spawning, makes a menstrual cycle in fish unnecessary.