How do you figure that Balto was two years old? Did it say that somewhere?

Balto was two and I do not know how old the rest are.

Yes, Balto is two years old in the first film. He dosn't seem to be a teenager, more like a young adult. In dog years he would most likly be two years old to me. I figured that Jenna would be the same age. If They had pups together in the same year, then Aleu and Kodi would be a little over one year old by the time of the Balto 2 ending. (remember the script said that Aleu was one year old) I guess that by the time of Balto 3, Balto and Jenna would be five, and that would make Kodi and Aleu two. I guess I'm stating what F-As-Balto said, except I already thought about it long before he said this.

The true Balto was 2 years and a half when he saved Nome if I remember well. I calculated that in the 3rd film (if in the first one the age is right) he should be 5.
Aleu and Kodi are almost one year old and in the 3rd they are 2 years old. (Note this ages can be wrong only of 1 year in less)

Errrm...Make an effort when writing a question please. Colors are not there to be used this way. Anyway, to answer you, we don't really have any idea : they are animated characters. Although it may be able to guess for Balto if you consider that they used the same dates as in the true story.

It's almost impossible to determine exactly how old the characters were during the movies...