Twitter-icon.com has a great selection of twitter icons and buttons.
Site: aniweb.org (Animaux Sans Frontieres ( animal protection foundation) - Animals Without Frontieres - (Une organisation pour la protection des animaux))
Do you have a twitter account? If so it's important
to get as many people as possible to follow you.
Great follow me icon captures attention of the visitors
and brings more followers to your twitter account.
Choose great twitter icon for you website!