Can humans talk to animals?

Question: Can humans talk to animals?
- Keywords:
  animal,
  communication,
  human
Asked by iluvnibbley456 to Ed, Hayley, Jason, Nathan, Sophie on 20 Mar 2013. This question was also asked by jhdxd.
- Hayley Evers-King answered on 20 Mar 2013:
  
  I talk to our cat all the time, sometimes she even meows back at me! But I don’t think we really understand each other. The difficulty with this is proving how much animals understand, when they don’t share a language with us. Some really interesting research has been done to understand this. Check out Alex the Parrot – they think he may have understood his trainer on some level: http://www.youtube.com/watch?v=7yGOgs_UlEc

Question: Can humans talk to animals?