West Australian police are calling for public help to find one of two tortoises that disappeared from Perth Zoo seven years ago, after recovering the second animal from a Perth suburban home.

It follows last week's alleged theft and recovery of a baby meerkat from the zoo.

Police say the two Madagascan radiated tortoises were reported missing in 2011, and one was recovered just weeks ago at a home in the Perth suburb of Girrawheen.

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Police were at the house on an unrelated matter when they found the animal, and believe the second tortoise had also been there, but it was yet to be recovered.

The rare species of tortoise is critically endangered and requires a special diet and living conditions, which are vastly different from the needs of a tortoise purchased at a pet store.

WA's Environment Minister Stephen Dawson said Perth Zoo had beefed up security for the species after the tortoises disappeared in 2011.

"Since then the tortoises have been moved from their open air exhibit to a fully enclosed facility, to ensure security is improved and it doesn't happen again," he said.

Mr Dawson said the recovered tortoise is back at Perth Zoo and is being monitored in quarantine.

He said it was concerning people would go to extreme lengths to take animals from the zoo.

"These animals aren't pets, and you're putting them at risk if you bring them into a home environment," he said.

Tortoise returned days after meerkit found

News of the recovery of the tortoise came just days after the disappearance of a baby meerkat from Perth Zoo.

Officers found the meerkit on Friday night, at a home in the Wheatbelt town of Beverley, about 130 kilometres south-east of Perth.

Police said officers found the meerkit at a house in Beverley on Friday night. ( Supplied: WA Police )

Police say a 22 year old man and a 23 year old woman are set to face charges over the matter.

The zoo had reported the meerkit missing from its enclosure two days earlier, when keepers noticed during the usual round of evening checks it had disappeared.

Staff were initially worried it may have been taken by a predatory bird.

The meerkit was stressed and hungry when found, but zoo staff later said the animal was recovering well.

Mr Dawson said authorities were working to understand exactly how last week's breach occurred, and to prevent further incidents.

"What we're doing in relation to the meerkat is looking at security, how we might tighten it," he said.

"It doesn't happen very often, but we certainly don't want it to happen again because we don't want these animals put at risk."