Russia, Oct 23, 2016: Alina Orlova reportedly posted footage of the horrific acts, which included a cat having its heart ripped out, on social media.
She was stopped by police in the far eastern Russian city of Vladivostok where she was waiting for a flight.
Images online appear to show the 17-year-old and her friend, Kristina K, who likes to wear horror movie-style makeup and contact lenses, killing for ‘blood lust’.
The horrific footage shows one dog nailed to a wall as if it had been crucified, and another hanging by its collar and then shot with an air gun.
Metro.co.uk chose not to show this footage due to the extremely violent content.
Police became involved after concerned internet users reacted with outrage to the graphic images.
Local residents even started a petition calling on the authorities to do something about the alleged teenage torturers.
Both of the girls are students and live in the city of Khabarovsk in southeast Russia.
They reportedly adopted the ‘unwanted animals’ and had promised to look after them.
In one picture, Orlova is seen clutching a puppy with her mouth open wide as if she is about to bite it, and another image shows Kristina menacingly holding a hammer and a nail.
Orlova also posted online that she was planning to kill her own mother, asking people how long she would have to stay in prison if she was caught.
Kristina’s family are believed to have close ties to the police force in Khabarovsk, according to local media.