Successful Tails

Successful Tails, run by Cassie Johansen, is a dog training business in Roseland, Florida. Cassie holds the Certified Professional Dog Trainer, Knowledge Assessed (CPDT-KA) credential. Pet Professional Guild membership means a commitment to training without shock, prong or choke collars. Services listed include private lessons, group classes and service dog training.

At a glance

• Trainer: Cassie Johansen
• Credentials: CPDT-KA · PPG member
• Approach: Positive reinforcement (reward-based)
• Services: Private lessons, group classes, service dog training
• Location: Roseland, Florida

Why it matters for French Bulldogs

Neck pressure can make breathing harder for flat-faced breeds, which is why vets commonly recommend a harness instead of collar corrections for French Bulldogs. Reward-based trainers work without leash pops, prong or shock collars, which keeps the airway out of the lesson. For more, see our guide to force-free French Bulldog training.

Sources: the Pet Professional Guild member directory, checked October 2026. We show credentials as the trainer lists them in the Pet Professional Guild directory. Prices and services change, so check with the trainer before you book.