[Lessismore]

Chlamydia is a genus of bacteria. One species is Chlamydia pneumoniae, which causes the disease Pneumonia. It is not transmitted sexually.

Chlamydia trachomatis is the sexually transmitted disease.

Chlamydia psittaci causes "Parrot Fever" or "psittacosis", and is caught from birds. I don't think it is transmitted sexually, but having sex with an infected parrot would be a bad thing.

[Yaron]

"....but having sex with an infected parrot would be a bad thing."

Not to mention noisy.