There appears to be confusion in what ear an EID tag needs to be placed.
What is the animal's right? What is it's left?
We prefer to use the terms Nearside or Offside
right hand side if you are facing the animal
left hand side if you are sitting on the animal like on a horse
left hand side if you are facing the animal
right hand side if you are sitting on the animal like on a horse
EID tags are preferable placed in the Offside ear... readers and other equipment are generally placed and designed so that it works best offside. All Australian tags are placed offside.
All other commercial reading systems like at the yards and meat works are offside.. so if you place tags in the wrong ear... there is likely to be issues.
Get a good head bail and use an Animal Control Unit Pacifier to get those tags in ezy.