A Bengal tiger capitalised on a gap in the security fencing separating it from a lion at a zoo in Turkey and killed it, it has been reported.

The animal severed the lion's jugular vein in a single stroke at Ankara Zoo after locating the gap, zoo officials said.

Despite the incident, the zoo says it is safe for visitors. "Local and international standards are applied at our zoo," it said in a statement.

Local media reports said the incident happened because the big cat had completely broken down the fence, but the zoo moved to deny this.

Six tigers and two lions remain at the site.

Recently, it was reported that two animal welfare organisations in Canada were concerned that visitors to some of the country's zoos were at risk of attack from animals because security fencing is too low.

Rob Laidlow, of Zoocheck, told CTV News that in some cases, lions and tigers were behind three metre fencing, but tigers can jump four metres.ADNFCR-3337-ID-800449706-ADNFCR