Rabbits will show signs of estrus when they are about 4 months old. The estrus cycle of female rabbits is not fixed. It usually lasts from eight to fifteen days and lasts from three to thirty days. There are also cases of female rabbits being in estrus that last for half a year. Male rabbits will basically go into estrus all year round, mainly due to the influence of the external environment and the stimulation of female rabbits. Male rabbits raised alone will go into estrus less often. Generally, male and female rabbits are in estrus most frequently from February to April and September to November.

Performance of rabbits in heat:

1. When a male rabbit is in heat, his hind legs often slap the ground hard to make a sound, and he chases after the female rabbit. This behavior is It is courting the female rabbit and expressing its presence to the other party.

2. When a female rabbit is in estrus, she will secrete a special smell, raise her tail and swing it continuously to spread the secreted smell outward, thereby luring the male rabbit. They will also rub their chins against food bowls and cage doors, and sometimes they will bite their own fur or pick up grass to use as nest pads.