Lewis Hamilton shares Roscoe health update; misses Pirelli test as Zhou Guanyu steps in

Seven-time Formula 1 champion Lewis Hamilton has shared a health update on his beloved dog Roscoe after the bulldog was hospitalised.

After asking fans to send their prayers for Roscoe on an Instagram story, the British driver has now shared an update, explaining that 12-year-old Roscoe had caught pneumonia again after overcoming it earlier this year.

"Please keep Roscoe in your thoughts. I want to keep you all updated. Roscoe caught pneumonia again and was struggling to breathe," Hamilton wrote on Instagram.

"He was admitted into hospital and sedated to calm him while they did checks on him and during the process his heart stopped. They managed to get a heartbeat back and now he’s in a coma.

"We don’t know whether he will wake from this. Tomorrow we’ll try to wake him up. I’m by his side and want to thank you all for your prayers and support."

This comes as Lewis Hamilton was due to complete Friday's Pirelli 2026 tyre testing at Mugello, but reserve driver Zhou Guanyu has stepped in for the 40-year-old, who is now carrying out the test alongside Charles Leclerc.

Hamilton joined Ferrari at the start of the 2025 season after a 12-year stint with Mercedes, which resulted in six of his seven championships. Since joining the Maranello outfit, the Briton has worked to adapt to the new team and power unit. 

Lewis Hamilton, Ferrari

Photo by: Andrew Ferraro / LAT Images via Getty Images

After finishing the Azerbaijan Grand Prix in eighth place, Hamilton revealed that he was feeling more comfortable with the SF25, but was still not fully comfortable.

"I think there’s still some improvements to make in terms of how aggressive I can be," he said. "The car has been quite snappy, so still not 100% confident under braking when I’m attacking on the brakes.

"In the last race, I was, but in this race, didn’t feel it so much with the set-up that we ended up having," Hamilton explained after the Azerbaijan Grand Prix.

"It’s kind of crazy, because we’ve been progressing yet we’ve not had results, really in the last few races. But there’s not like no progress so I think we’re able to do a good weekend and a good result."