I have a 8 year old chocolate labrador - Henry - who I walk often, we go on 3km (2 mile) walks a few times during the week.
He is reasonably fit, he weighs around 35kg (77lb) and I've wondered recently whether I should take him on 5km (just over 3 miles) runs that I do on Saturday mornings.
I am usually able to run the 5km between 26 and 29 minutes so it's a steady pace.
Would he be considered too old in labrador years to run a full 5km when he is used to walking at a fast pace?