Double-coated German Shepherds shed heavily year-round. Their high dander levels also aggravate allergies.

This heavy shedder blows its thick double coat twice a year. Sibes spread dander everywhere, bad news for allergies.

Boxers groom themselves frequently, scattering allergens. They also produce a lot of dander in their short coats.

Goldens have lush double coats that require constant grooming to control heavy shedding and dander.

The wrinkly Pug's short coat traps dander and sheds moderately. Their high-maintenance coats are bad for allergies.

This popular toy breed sheds constantly and produces a lot of dander. Their long coats also trap allergens.