1) Cattle ranchers do it 2) Cauterize cattle 3) Disarm a bull 4) Do a ranch job 5) Poll cattle 6) Remove 7) Remove a rack 8) Remove antlers 9) Remove antlers from 10) Rid of antlers 11) Take 12) Take away 13) Take away the defenses of 14) Take the horns off 15) To remove the horns from 16) Withdraw 
• (v. t.) To deprive of horns; to prevent the growth of the horns of (cattle) by burning their ends soon after they start. See Dishorn.
De·horn' transitive verb [ imperfect & past participle Dehorned ; present participle & verbal noun Dehorning .] To deprive of horns; to prevent the growth of the horns of (cattle) by burning their ends soon after they start. See Dishor...
[v] - prevent the growth of horns 2. [v] - take the horns off animals
verb take the horns off (an animal)
to remove the horns of (cattle). · to prevent the formation or growth of horns in (cattle), as by cauterization. · to prune (a tree, shrub, etc.) by shortening major branches to an extreme degree.