Some animals can change their gender for reproductive purposes or due to development as they age. Animals that have both male and female reproductive organs are called hermaphrodites, while there are also other animals that undergo gender changes due to environmental changes. Some animals can even change their gender for their survival.

"Perhaps it sounds strange to some people, but this phenomenon occurs in various animal species, including fish, birds, and reptiles such as bearded dragons and certain types of snakes. Before we explore the mechanisms behind this ability, let us understand more deeply why and how animals can change their genders. The following are animals that are capable of changing their genders for specific purposes, as summarized from various sources on Wednesday (03/07/2024)."

The following is the translation of the given 'Bahasa' text to 'English' while preserving any html tags: "Bass fish undergo sex change due to supply and demand factors. Females can change into males if the male population decreases, making them protogynous hermaphrodites. However, not all bass fish undergo sex change, depending on the needs of their population."

The process begins with the dissolution of the testes and the enlargement of the ovarian tissue, which takes more than a month. Once they become females, clownfish cannot revert back to being males. This usually occurs in the largest male clownfish to allow for reproduction, but not all clownfish undergo gender change.

This allows for a complex mating system where gender changes occur if the population of female or male wrasse fish is unbalanced. For example, two male wrasse fish placed in one aquarium can cause smaller fish to change into females, ensuring the survival of the species without worrying about a shortage of mating partners.

Some grouper are born male and then change into females after they mature. The majority of grouper have female sex, especially at a young age, but some can change their sex in response to age or body size, or when the number of males in their environment is low.

The following is the translation of the given 'Bahasa' text to 'English' while preserving any HTML tags: "The northern cardinal is an example of a bird that undergoes bilateral gynandromorphism, which results in a bird with both male and female colored feathers simultaneously."

The increasing climate change that raises temperatures, especially in northern Queensland, Australia, causes an increase in the number of female turtles. After birth, green turtles cannot change their gender.

Some male frogs can develop female reproductive organs due to hormonal changes often triggered by human pollution, especially synthetic hormone waste.

Although rare, gynandromorphism causes butterflies to have half female wings and half male wings due to changes in their chromosomes.

Eggs incubated at a temperature of around 32 degrees Celsius can change male eggs into female ones. This environmental temperature affects the gender of bearded dragons when they hatch.