In entering the digital arena books (e - or not) are brought into direct competition with not only other time wasters (games, video, etc.) but other forms of reading, namely the web and apps. (studiotendra.com)
Once you are sure that your dog has identified the behavior in question, you can start to offer the food reward only every other time — you should still praise your dog for good behavior, however. (pawster.com)
You can't help but be excited, because likely the only other time you would see a snake is at the zoo, where it's locked up in a tiny glass cubicle. (entrepreneur.com)