Not on their own

The ballooning wild cat population has Sviblov worried. He needs an intact wild cat corpse, five cat tails, and experiment logs to research the recent changes in wildlife in the Zone. He suggests searching X-18 laboratory, X-16 laboratory, and X-10 laboratory for clues.
==Walkthrough==
=== X-18 laboratory ===
Five Brotherhood white coats will be waiting in the lab along with all of the mutants that normally reside there. Make your way down to the bottom floor to find a scientist named Ozerov in the observation room.
He is unhelpful when spoken to, and begins firing on you if you take the Experiment Log No1 on the table in front of him.
=== X-16 laboratory ===
Five zombified stalkers will be standing guard when you exit the elevator shaft in addition to all the normal spawns. Beware one white coat waiting in ambush beyond the corner and a few zombified stalkers coming from the brain room.
In the brain room, there will be zombified stalkers and white coats spread out through each level.
Walking into the final room will cause dozens of rats and cockroaches to spawn along with 20 wild cats. It may be in your best interests to quickly toss a grenade and get rid of the bulk of the swarm.
Pick up the whole cat corpse in the showers, and the Experiment Log No3 in the room across.
Three white coats will be waiting in ambush in the Yantar tunnels, so be prepared.
=== X-10 laboratory ===
The lab will be overrun by cockroaches and rats, along with 20 Brotherhood white coats who will aggressively come to meet you after wiping out the local Monolith squads. Make sure you grab the Experiment Log No2 from the front desk. Strangely, this log is signed by Ozersky.
=== Swamps ===
Bring the cat body, five cat tails, and all three experiment logs back to Sviblov who will give you a Vodka for your trouble. He allows you to finally speak to Kalancha and promises to help in the fight against the Brotherhood. The quest is closed.
==Notes==
* The Brotherhood white coats in X-10 are all captains in the military, reflected in their names.
==Bugs==