"This isn't safe for them. He could train too much and become an Olympic champion and never return home," one user said.

The hilarious clip comes with a caption that reads: "My cat learned a new way to run faster." It is followed by: "Speed I am speed." Pictures of Tamarindo shared by his owner.

Meet Toffee, a paraplegic cat who was adopted four months ago by her mom, Nadine. Toffee was hit by a car and left for dead. Rescuers were able to save her life, but not her back legs.

The big cat has faced two historic bottleneck events that drastically reduced its population size, according to a 2017 report in the Journal of Heredity. One event occurred 100,000 years ago and ...