Only sight coursing hounds can really win. They course—chase or hunt—by sight not scent. Their build—long legs with a deep chest with a big heart inside—also helps keep the lure in sight and to run very fast. Few as fast as Socks tho!
Any dog with a reasonable amount of prey drive can take part in a fun run. Terriers have plenty of prey drive but not the speed of sight coursing hounds.
Not all hounds, not even all whippets have enough prey drive. Neither do most puppies. Funny to see a young dog go chase the lure then suddenly realise it has run say 50m from its owner and runs back, not liking being alone out there
But most dogs will chase the lure and have fun doing so, running and barking as loud as they want, really good to see. Herding dogs DO have a tendency to try and round up the lure but some do well.
I don’t think a chihuahua would chase the lure but one meeting somebody had a chi with them and it got loose. Took half an hour to corral it again
There are health aspects—for the dogs—to take into account. Overweight or injured dogs won’t be allowed to take part. We need to stretch our mutt’s muscles: straddle the dog and turn its head to right and then left to stretch the muscles in its necks then all four legs are stretched forwards then to the back. Socks HATES all this and resists.
Then we walk to warm the dogs up just before their run and give them a shorter, slower walk to cool the dog back down. After a run the dog can drink a bit of water, later can take a bigger drink. No food in the dog’s belly—food in the belly when running fast for a few hundred metres can cause torsion bloat. No food for like half an hour after the dog’s last run.
But today, that second run by Socks—