The Big Dog Remote Trainer is recommended for pets that weigh at least 8 lbs and are 6 months of age or older. Depending on the size of your Lab/Collie mix, the Big Dog Remote Trainer may be suitable for your pet, but it may be necessary to trim the collar to fit properly. As she grows, replacement collar straps may be needed, and are available through our Customer Care Center (1-800-732-2677)
answered 5 months, 3 weeks ago
Pet Safe Brand Expert
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