We have done like Karen, and push it down hold the mouth shut-get but---ugh!
Some great suggestions here already, and for something so important-be creative!!!
Also, If it helps, we have given our goats shelled peanuts at times. Hillbilly, our buck loves peanuts! He will do anything to get a peanut in the shell!!!!
So, I have opened the peanut shell enough to pop one nut out and slide a capsule in for him! This last time he didn't even crunch the pill at all! He was so excit d, as always to get the peanut...he didn't know it was loaded with a copper bolus!!!����������