Chasing after an animal in the dark was better said than done. In spites of Uriel's heavenly rank, Dash skill and ability to summon a gas lantern from his trait it turned out to be way more difficult than tracking down a cryptid.
Contrary to cryptids or hunters, regular animals had barely a trace amount of flux energy which amounted to little more than white noise even with the glasses that allowed Uriel to see flux energy.
This didn't mean Uriel was unable to actually catch a monkey or any amount of monkeys he wanted as he moved faster than any animal possibly could, but he needed to find the specific monkey that snatched his hat which proved to be a challenge in its own.