They drown rather quickly as most have no idea how to hold their breath.
I wouldn't try putting a dog under water and I don't know.
for a long time
no one knows
depends
dog
About half a year
63 days
It can last as long as the people want it to, or until the dogs or the racers themselves die.
yes. but not long
Because coral reefs are under water; a dog would drown under water, because it has lungs and not gills, because it is adapted for life on land.
a dog can last at least 3 hours or 2 but if its old it only lasts 20 minutes
1 dog day = 7 human hours.ALL CREDIT TO Does_one_dog_day_equal_seven_human_days