The short answer
In-ground and wireless fences cover any number of dogs wearing compatible collars; you buy an extra collar per dog. GPS fences need one GPS collar per dog (SpotOn notes each dog needs its own collar), and some need a plan per collar. Set and train each dog individually.
By technology
| Type | What each extra dog needs |
|---|---|
| In-ground / wireless | An extra compatible collar |
| GPS fence | Its own GPS collar (and plan, if required) |
Settings per dog
- Use the lowest level each dog responds to; it differs between dogs.
- Small dogs may need tone-only or vibration.
- Train each dog separately before letting them play together near the boundary.
Options
PetSafe Classic is sold as a 2-dog kit. Dogtra SMART FENCE alerts you in the house when a dog nears the edge.
SafetyNo electronic fence is a physical barrier. Never rely on one alone near a busy road.
Products mentioned
Questions readers ask
Do I need a second transmitter for two dogs?
No, just a second compatible collar.
Does each GPS collar need its own plan?
Where a plan is required, usually yes; check the maker.