I will sometimes put the name of the species in my character's name, depending on what species they actually are. If my character was a wolf, lion, tiger, cat, ect. I wouldn't put it there. But if it's an animal that isn't a common feline or canine to play as; bobcat, jaguarundi, margay, ocelot, dingo, coyote, dhole, etc. I will put it there so others know what kind of animal I am right off the bat. I even put the species tag on there even if it's a non-canine and non-feline species; raccoon, skunk, bear, badger, wolverine, porcupine, bat, tanuki, owl, duck, rabbit, etc. I put it there, just so they know what others are dealing with... depending on the RP.
I never put my character's age in the name tag. I will often times put the gender, just because most people think my character is one gender, when it's the opposite. It's to avoid confusion.
When it comes to the bio, I like to write a few things about the animal I am playing. If it's an animal people aren't too familiar with, I will write down facts, tips, and hints about what the animal is like, what they eat, where they live, and how they behave. Then that's when I write the short little bio about the character itself. Pretty much all my roleplay characters have a bio of some kind.