"They have a pretty good relationship. For the most part, they will play with each other," the owner told Newsweek.

Vicki Cramming is great for exams, providing you have reviwed you notes previously and already have a reasonable familiarity with the material. It doesn't seem very helpful for improving long term ...

Wordplay includes the rhymes and abbreviations you learn at school. It's particularly good for linking information that's quite hard or complex. Popular ones: 'Thirty Days Hath September, April June ...