A man who was dragged off a Perth train by two guards said he was made to feel “like a criminal”.

David Miran was removed for the Mandurah train on Monday because he had a therapy dog with him.

The TransPerth guards said that wasn’t allowed, despite Mr Miran carrying a letter from his psychiatrist.

The 63-year-old suffers from severe anxiety and depression, and said having his therapy dog Axel by his side is a necessity.

“Without him, I wouldn’t be here today, that’s a fact,” he said.

Mr Miran told 9NEWS he used the same train line on Sunday and a different transit guard said his medical letter was sufficient, however the two guards told him he needed a permit.

“I’ve got bruises all up and down my arm and broken skin from fingernails,” the 63-year-old told 9NEWS.

“Definitely a second class citizen, a criminal. I feel very, very intimidated and threatened.

“Perhaps show a little more empathy in future."

The Public Transport Authority said the guards acted appropriately.

© Nine Digital Pty Ltd 2018