Jack Russell Terriers Play Tug

Watch this video of two Jack Russell Terriers playing tug. These dogs both have a high arousal level so it's essential that they have an “on-off” switch. If their play becomes too aroused, then they could get into a fight. This owner don't generally let them play tug with each other much because even the medium-level arousal causes them to be more competitive/aggressive around each other and aroused during the day (more likely to bark at sounds coming from outside the house.. etc)