Peering through enclosure windows, they were a popular source of entertainment at Jerusalem's Biblical Zoo.
But the human visitors haven't been around for a month, since the start of a national coronavirus lockdown in Israel – and the animals miss staring at them, zoo keepers say.
A sprawling site in Jerusalem, the zoo contains a wide variety of animals but gives pride of place to species mentioned in the bible.
When a Reuters television crew toured the zoo, black-and- gold howler monkeys came out of their house, eager to take a look.
The lions, however, seem to be an exception, sidling closer to their keepers and the front areas of their compound now that the crowds are gone.
"They feel more secure when they see less people," Avni-Magen said.