• In the white boxes below, type the words you hear. You will hear each word twice.
       (Remember to use the correct spelling and capital letters, etc.).
  • Click the button at the bottom to check your answers.
  • Press the "refresh" button on your browser to play again.

1. by by seven
2. it more determines canine age
3. simple mental
4. It involves a of the genomes
5. DNA
6. measure the ageing speed of
7. The researchers blood samples
8. After a bit of number
9. a four-year-old
10. to a 52-year-old person
11. the 1:7 ratio wasn't an measure
12. different of dog age at different speeds

Back to the dog-years lesson.

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