The best place to walk your dog off the lead is Caddam Wood.
Go to Kirriemuir, and at the BP garage turn left and follow the signs for the A955 to Glenprosen and Glenclova. This road circles Kirriemuir to the North. You eventually come to a T junction. Turn left here still following the A955. A few hundred yards on your left is the Wood. You can park in the lay-by on either side of the road and you will see a sign saying Caddam Wood. My dog loves it there.
(Walking in the woods behind the cottages is not recommended as this is a sporting estate and there could be shooters about, after pheasants or deer.)
Blairgowrie Riverside Walk
Turn right after the bridge coming into Blairgowrie then first right and park near the river. You can walk for miles along the river bank.
Head north from Kirriemuir along the A955 through Dykehead and up Glenclova, past the hotel to the Forestry Commission car park. Walk up through the nearby buildings and do the white trail - a very pleasant loop, scenic by easy walking.
The red route is not well marked or as scenic.
To the south west of Kirriemuir, Reekie Linn Falls offers a spectacular sight. The name ("smoking pool") gives you an idea of what to expect!
A picnic site and car park on a bend of the road leads by 200m to the wooded gorge of Glen Isla with precipitous viewpoints of the defile where the Isla is squeezed and falls in tiers for 100 feet. You can walk further along the glen as well, where there is an excellent loch side restaurant and a tearoom.
Car park, wooded valley, lots of paths and a stream.
The Cateran Trail
The Cateran Trail is a 63-mile long-distance walk beginning and ending in Blairgowrie, Perthshire. It goes up GlenIsla to the Spittal of Glenshee and back by Glen Ardle.
It is named after the marauding brigands from the Highlands, who plundered the cattle-rich glens of Angus and Perthshire, with fire and sword, from the 13th till early 17th Centuries.
The Trail can be divided into five easily walked sections with a good quality pub, hotel or bed & breakfast every 12 miles or so of the circuit. A vehicle service is available to carry packs for walkers to their next stopping place. The trail is administered by the Cateran Trail Trust and the route is clearly signposted from surrounding roads and by wooden waymarkers with their yellow arrows and red Heart of Scotland signs. Only about 8 miles in all is tarmac.