Yes, American Shorthair cats with long hair require special grooming attention to keep their coat healthy and free from matting, tangles, and knots. Here are some specific concerns for grooming long-haired American Shorthairs:

1. Brushing: Long-haired American Shorthair cats should be brushed at least once or twice a week to remove loose hair, prevent mats and tangles, and distribute natural oils throughout the coat. Use a slicker brush or a metal comb to gently work through the coat, starting at the head and working your way down the body.
2. Bathing: Long-haired American Shorthair cats may need a bath every 4 to 6 weeks, depending on their activity level and the state of their coat. Use a gentle cat-specific shampoo and avoid getting water in their ears. Rinse thoroughly to remove all soap and suds.
3. Trimming: Long-haired American Shorthair cats may need occasional trimming, especially around the hind end and underbelly, to prevent mats and tangles and keep their coat from getting too long. This can be done at home or by a professional groomer.
4. Matting: Mats can form in long-haired American Shorthair cats, especially in areas where the fur is thick or where there is friction. Mats can be painful for your cat and can lead to skin irritation, so it’s important to remove them as soon as you notice them.
5. Tangles: Tangles can form in long-haired American Shorthair cats and can be difficult to remove if they are not attended to regularly. Brush your cat regularly to prevent tangles from forming, and use a detangler or leave-in conditioner if necessary.
6. Knots: Knots can be a problem for long-haired American Shorthair cats, especially if they are not brushed regularly. Knots can be difficult to remove and may require cutting or shaving the hair. To prevent knots, brush your cat regularly and use a leave-in conditioner if necessary.
7. Ear Care: Long-haired American Shorthair cats are more prone to ear infections due to their long hair, so it is important to keep their ears clean and free from debris. Use a soft cloth or cotton swab to gently clean the inside of your cat’s ears.

In conclusion, grooming long-haired American Shorthair cats requires extra time and attention, but it is well worth it to keep your cat’s coat healthy and free from matting, tangles, and knots. Regular brushing, bathing, and trimming, along with ear care, will help ensure that your cat looks and feels his best.