Hogg, along with Richie Gray and Sean Maitland, was one of three Scotland players selected by Wales coach Gatland in his role as Lions boss for the tour Down Under.
And having trained under Gatland, the 21-year-old hopes he will be able to give his team-mates the inside line on what to expect from Wales.
"I've got a fair idea of how Wales are going to be playing," he told the Scotsman.
"I've obviously spent a fair bit of time with them and know how they play as individuals but collectively as well it will be pretty much how we played in the summer so I'll be having a little input in training this week with little things about what they're about and bits about individual players.
"But we have to concentrate on our game as individuals and as a collective and hopefully go down there and shock them."