7 transgenic animals that generate controversy

Transgenic animals are those to which a protein-coding gene has been added that provides a function that the animal does not have. This practice is highly questionable for many reasons.

With this practice, animal rights are not respected, they are manipulated in such a way that "artificial" creatures are created and some of these animals can end up on our plates without being informed and we still do not know what consequences this may have. What happens to our body if we consume GMOs (genetically modified organisms) or transgenic products?

This article is only informative because we understand that, whether we like it or not, the existence of these genetically modified animals (and many others) is a reality and we have the responsibility to inform it, even if we are completely against these practices with animals.

GMOs are used in a variety of fields, such as agriculture, medicine, and research. In agriculture, GMOs are used to improve animal performance, increase their resistance to disease and reduce their environmental impact. In medicine, GMOs are used to produce medicines and vaccines, and to study diseases. In research, GMOs are used to better understand biological processes and to develop new technologies.

A brief list of transgenic animals


Cows are known to produce a lot of methane, the second most important greenhouse gas. During digestion, bacteria appear that cause excessive gas production. Scientists have created cattle that produce 25% less methane than conventional cows.

There are also genetically modified cows to increase meat production: they are animals with little hair and very pronounced muscle development.


There is a type of salmon that can grow twice as fast although it has the same smell, color, texture and flavor as standard salmon.

This is achieved by adding Chinook growth hormone and Pollock growth hormone activator to Atlantic salmon. Canada approved it years ago because it was "fit for human consumption."


Some species of mosquitoes are designed to fight malaria, a disease that kills a million people each year.

The problem is that Mosquitoes They are also part of the ecosystem and if they disappear it will affect other animals that eat them.

For this reason, mosquitoes are designed to fight Plasmodium, the parasite that causes the disease, and pass this trait on to their offspring. And also others who die as soon as they are about to reach sexual maturity.

Transparent fish and frogs

transgenic animals

The justification for the creation of these fish and amphibians whose skin is absolutely transparent is that it will no longer be necessary to make vivisections to know how their organs work, since these are clearly visible through the epidermis. Unfortunately, this would not prevent them from remaining laboratory animals.

Golden seahorse

This is the first genetically modified animal bred in Vietnam and is a seahorse that has been injected with genes from a mixture of jellyfish protein and gold dust. They are sold as pets and are popular in Southeast Asia.

chickens without feathers

The idea is that if chickens do not have feathers, they will be easier to handle, cheaper and will pollute less. The problem is that the total lack of hair is a disadvantage when it comes to protecting the animal from parasites or adverse weather conditions.

shiny cats

transgenic animals

Glow-in-the-dark cats were developed as a way to combat the feline immunodeficiency virus (FIV). This mainly affects feral cats, although it is a real problem in domestic cats.

American and Japanese scientists have genetically modified cats to help them resist FIV. To facilitate the "labeling" of the cells, they also introduced a green fluorescent protein that allowed them to track the development of the resistance gene by examining it under a microscope. Cats behave normally during the day, but sometimes they glow at night.

Potential challenges of GMOs

  • Food Safety: There are concerns about the food safety of GMOs, as it is not known for certain whether they are safe for humans or animals.
  • Environmental impact: There are concerns about the environmental impact of GMOs, as they could escape into the environment and cause harm to wildlife species.
  • Social acceptance: There is public opposition to GMOs in some countries, which could make their commercialization difficult.

GMOs are an emerging technology with great potential, but they also pose some challenges that must be addressed before they can be used safely and responsibly.


With information of: https://www.expertoanimal.com/