He is probably for a male...
It depends of his breed, his personality and his behavior : Here is a little list with H ( letter of the year...2012 )
Haddock
Hades
Haïku
Half
Halo
Hamak
Hammer or Hamer
Hancock
Handy
Hank
Hannibal
Hardy
Harkos
Hartus
Harybo
Hasko
Hatchi
Hawaii
Hawk
Hayo
Hazer, Heat, Hello, Helio, Helios,Helium, Helmer, Hendrix,Hercule, Herode, Heros, Hertz, Hidalgo, Hilmar, Hippo, Hirsute, Hit, Hobbit, Hobbo, Hocus, Holby, Hold up, Homere, Hominus, Hooligan, Hooper, Hoover, Hop? Hot, Houmous, Houston, Hubbie, Hudson, Huge, Hulk, Humphrey, Hunter, Hurricane, Husky, Hutch, Hyde, Hydromel, Hypso...
If you don't want to use the letter of the year, I have a list for each letter !!!