The tourist caught the attention of a policewoman at Bogota's International Airport who allegedly asked her how far along she was.
She reacted aggressively, which aroused the suspicion of officials who went on to search her.
This year, nearly 150 people were caught with drugs at Bogota's airport.
about a third of them were foreign nationals, according to the Colombian authorities.
'Delicate touch'
The Canadian national had entered Colombia at the beginning of August and was about to board a flight to return to Toronto, when a policewoman asked her how long she had been pregnant.
"[The Canadian] didn't like the question, which made the official suspicious. Instinctively, she then very delicately touched the lady's belly, realising it was too hard and extremely cold," said the deputy director of Colombia's police anti-narcotics section, Colonel Esteban Arias Melo.
The woman allegedly said she was seven months pregnant.
After performing a body search, the police found two sealed bags stashed inside the latex belly, which contained 2kg (5lb) of cocaine.
Colombian authorities say the Canadian national will be charged with drug trafficking, possession and production and could be sentenced to between five and eight years in prison.
The drugs would have had a street value price of around $60,000 (£94,000), Colombian police said.
Government officials say 874 foreigners are currently being held in the country's jails, the majority on drug charges.
一名加拿大妇女企图携带毒品登机时被哥伦比亚警方逮捕，特别之处在于，这位妇女“怀孕”的腹部是乳胶伪造的，可卡因就藏在她的“肚子”里。
据英国广播公司等媒体9月11日报道，一名加拿大妇女煞费苦心乔装打扮成孕妇携带毒品登机，却被哥伦比亚警方识破逮捕。
哥伦比亚警方称，在波哥大机场逮捕了28岁加拿大籍女游客塔比莎·里奇。她自称怀孕，企图携带毒品登机前往多伦多，但其隆起的肚子却是乳胶伪造的，可卡因就藏在她“肚子”里。
她在波哥大国际机场引起一位女警官的注意，据说，女警官当时上前盘问她怀孕几个月了。她回答说有7个月身孕，但反应过于激烈，进一步引起警官的怀疑，于是对她进行了搜查。
据哥伦比亚官方称，今年波哥大机场有近150人因走私毒品被捕，他们当中有三分之一是外国人。
里奇8月6日进入哥伦比亚，被捕时她正打算登机返回多伦多，不料遭到一位女警官的盘问：你怀孕几个月了？
“（这个女子）不喜欢这个问题，这让女警官生疑。她出于直觉轻轻摸了摸这位女士的腹部，发现她的腹部太硬，而且极度冰冷，”哥伦比亚警方缉毒司副司长埃斯特万•阿里亚斯•梅洛（Esteban Arias Melo）上校说。
警察对她搜身后发现，两个密封的袋子就藏在“乳胶肚”里，袋子里装有2公斤重的可卡因，在街头黑市上价值6万美元（约合37万元人民币）。
哥伦比亚官方称，里奇将受到走私、持有和生产毒品罪的指控，可能被判处入狱5至8年。
政府官员表示，目前加拿大监狱里关押着874名外国人，其中多数受到贩毒指控。
