1 Amazon has a selection of dog training books starting under $10. 2  Some shelters offer low-cost training, starting at about $35 and up for several weeks of classes. 3  The cost is usually lower for a dog adopted from that shelter. 4  Some boarding training programs offer a discount for a second dog from the same household. Amazon has a selection of dog training books starting under $10. 2  Some shelters offer low-cost training, starting at about $35 and up for several weeks of classes. 3  The cost is usually lower for a dog adopted from that shelter. 4  Some boarding training programs offer a discount for a second dog from the same household.
cortices. 1  1a (1) : the outer or superficial part of an organ or bodily structure (such as the kidney, adrenal gland, or cerebellum or a bone); especially : cerebral cortex (2) : the proteinaceous usually pigmented layer of a hair below the cuticleb : the outer part of some organisms (such as paramecia)
cortico-or cortic-pref. Cortex: corticotropin. [From Latin cortex, cortic-, bark, rind; see cortex.] cortico-or before a vowel cortic-combining form (Biology) indicating the cortex: corticotrophin. corâ¢tex (ËkÉr tÉks) n., pl. -tiâ¢ces (-tÉËsiz) 1. a. the outer region of a body organ or structure, as the outer portion of the kidney. b. cerebral cortex.