Throughout history, humans have played a significant role in shaping the animal kingdom, creating unique species through selective breeding and genetic manipulation.
This article explores seven fascinating animals that were deliberately bred or engineered by humans, showcasing the incredible diversity and creativity of our impact on nature.
From designer pets to livestock optimized for specific traits, these creatures not only highlight human ingenuity but also raise questions about the ethics and consequences of our influence on the natural world.
Human Rat Hybrid
Rats have been used for medical experiments and drug trials for several decades now. However, it was in July 2019, when Japanese scientists approved the idea of creating a human-rat hybrid.
It was the first human-animal embryo experiment conducted in history.
The idea behind the experiment was to develop a technique to synthesize human organs in the body of other animals. The initial results have been controversial, but several trials for this technology are currently underway.
Liger (Male Lion + Female Tiger)
One of the cross breedings of animals by humans has been the genetic fusion of the lion and the tiger species.
The feature of this fusion of species is so that they may grow up to be very large in a fast period of time. They are considered to be the biggest cats in the world.
In fact, the largest liger on earth weighs around 410 kg. Such a species does not exist in the wild, and can be seen only under captivity where they have been bred deliberately through artificial means.
Tigon (Male Tiger + Female Lion)
The tigons are similar to the ligers, except that in this case, a male tiger has been bred with a female lion. An interesting thing here is that this crossed species receives a growth-inhibiting hormone from both its parents.
As a result, it is smaller in size as compared to ligers, and even smaller than both tigers and lions. Further, tigons have more distinct tiger stripes as compared to a liger, and a liger hardly has any. Both tigons and ligers can reproduce naturally.
Freckles (Spider + Goat)
Now this one was a strange experiment, which weirdly ended up being a major commercial breakthrough. Randy Lewis, a professor of genetics attempted to infuse spider DNA into the cells of a goat.
The first such genetically modified species was a goat named Freckles. However, something very interesting occurred. The goat, Freckles, started producing spider silk in her milk.
This silk was found to be many times tougher and of superior quality as compared to the silk produced by spiders. Today, this species has great commercial value and is exploited for its silk-containing milk.
Beefalo (Buffalo + Cow)
Thanks to their commercial significance, this one (also known as cattalo) is a rather well known genetically crossed species. In fact, they have been around since the 1800s. This species was created by cross-breeding the buffalo and cow genes.
The species that it produces was found to be much more active and also ecologically sustainable as it grazed less.
Today, it is believed that almost all buffalo species have been contaminated by cow genes, and only four wild buffalo herds are left which are untouched.
Featherless Chicken
The featherless chicken is yet another animal created by humans for commercial benefits. Many scientists and animal experts see the future of poultry farming in this experiment, especially for warmer countries.
This bare-bodied chicken species is believed to have several benefits, like fast growth, lower calories, and lesser ecological footprints.
Human Pig
Finally, let’s finish our list off with yet another human-animal fusion that has been attempted by scientists. In 2017, the Salk Institute in California ran experiments to infuse the DNA of humans into pigs to help cultivate human organs.
The human-pig species that was created was considered to be a breakthrough to help meet the organ replacement needs of humans.
The Bottom Line
Nature is a great mystery to humans, and we are still uncovering new ways to understand it every day. These cross-bred animals show the dangers and possibilities of tampering with nature.
