Same thoughts. I'm moving on rather than hitting my head against a wall.

That wouldn't make sense. If I pass in (13) as the argument, 13 wouldn't be equal to 1 for the first If statement, and wouldn't be equal to 2 for the second If statement. We need the first two years to be unique because they're not like the other repeating number for the rest of dog and cat years.

The best way is to use no rounding. Avoid floating point numbers, double, and any other numbers you'd have to round, or where you can lose precision.

Does that happen in Sample tests? Did you click Reset to reload them? Backup your code first.

It was a bug in tests, should be fixed now.