The park is hoping Aleks will eventually start to use his pool to help him cool down, but he is yet to go in it.
Nichols said: “He’s never seen water other than drinking it so he doesn’t know that tigers naturally cool down by laying in water.
“We’ve had to make it so he can see the bottom and step in there.
“Our tigers have been with us for years so know to dive in, but he has no idea whatsoever.”
Nichols said he was proud of the progress Aleks had made since arriving at his new home.
He said: “He’s slowly acclimatised to his new environment, he’s engaging with his surroundings, and, crucially, he’s forming bonds.
“He’s started socialising with our other tigers, which is a massive milestone.
“On top of that, he’s formed a real friendship with me.”