Location: This mission becomes available after the completion of the Nigel and Mrs Thornhill optional mission. While exploring Los Santos, you may notice the orange circle shown in the above screenshot, which directs you to an alley in the Rockford Hills district.
After you get there, approach Kerry and start chasing her dog. Since Trevor cannot use any vehicles during the chase, it would be a good idea to develop his stamina beforehand. Thanks to which he will not run out of steam too early. The chase after the dog will end around the fire department. Approach Dexie, collect the collar and listen to the phone conversation with Nigel.
Rewards for completing the mission: none
Requirements for the completion of the mission in 100%:
- Hot on the Paws - You need to remain within short distance of the dog during the chase.