Animals rights protesters fronted a group of sick children and their families who were meeting a pair of Santa's reindeer on Monday afternoon.

Police were called to remove a group of about eight protesters, who were handing out pamphlets and filming children patting the reindeer at the Queensland Children's Hospital.

Maddison Challen was excited to get a kiss from one of Santa's reindeer. Credit:Lydia Lynch.

Vanessa Challen, whose six-year-old daughter suffers from a rare form of soft tissue cancer, said Maddison had been waiting for a year to meet the reindeer.

"It is a really tough time of the year for kids to be sick, she has been so excited about the reindeer," Mrs Challen said.