That's great...for them. They ARE the Tigers.
We ARE NOT the Gators.
The bottom line is that all schools that have a group of people for a nickname (Cajuns) either have a physical representation of this group of people for a mascot or have a mascot with historical ties to the school or the state that school represents.
At least Louisiana is the only state that has the Catahoula as the official State Dog, and the history of the breed is fascinating. The breed was developed specifically because they were found to be very good hunters in the Swampy marshland of South Louisiana and for their fearlessness.
It just fits.