No its dangerous for the environment and for the animal cloned. you can just keep it as a pet abuse it and then kill it repeat the cycle over and over again. The clones can feel things aswell and people dont seem to realize it. Its basically "playing god" as a mere human. its sad that people dont realize that these clones can feel things aswell and are living creatures
Examples of why this can be bad can include
Unexpected Outcomes aka mutations such as twisted or missing limbs.
Huge population increases Cloning can mess with the food chain and the world is already over populated as it is with some people and animals without homes.
No Diversity There would be no difference between the population everything would be the same. a world without diversity sounds horrible.
Who are you now? Say you had a clone, You would no longer be your own person you would be just another you. Who would the real you even be? How would it feel to know you arent the only you and there is someone else out there that thinks like you and acts like you?
They could be used for evil They can be sold and bought as tools for crime. This could be very dangerous seeing as that clone that is sold could be a clone of you and the true villain could get away with murder while you are behind bars.