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How to groom your collie 
Brush weekly. 
While it may seem like you need to attend to their long fur more often, once a week should be sufficient for most collies. You may want to brush them twice or more week during their shedding season, which typically takes place once a year during mid to late summer.
Check your dog at the end of each day to comb out any ticks or debris caught in the coat. Be especially careful to check paws, ears, armpits, and groin.