You might remember the buzz over cloning when Dolly the Sheep, the first mammal cloned from an adult cell, was born in 1996.
Fast forward two decades and cloning technology has moved on so much that you can now clone your pets.
But, animal cloning is still controversial and critics have raised ethical concerns about the wellbeing of donors and surrogates.
The success rate of a cloned embryo is relatively low and complications during the cloning process can cause pain and suffering to the animals involved.
This video is from BBC Click, the BBC’s flagship technology programme and was made in collaboration with BBC Reel.
Video by Claudia Baxter and Tristan Vince
Executive producer: Camelia Sadeghzadeh
Reporter: Stephanie Hegarty
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