http://fr.youtube.com/wat...ed&search=

What the hell are these animals doin' here & what the hell do they have 2 do with the song???!!

Good question...
From Wikipedia, comes a half-assed answer:

There are two versions of the video for "It's My Life." The first, envisioned by director Tim Pope as a statement against the banality of lip-synching, consists almost entirely of footage from nature documentaries, interspersed with shots of Talk Talk lead singer Mark Hollis standing in the midst of the London Zoo, with his mouth pointedly shut tight and often obscured by hand-drawn animated lines. The second version, recorded at the behest of EMI, consisted of the entirety of the original video projected on a green screen behind Hollis and his two bandmates as they lip-synched and mimed the song, deliberately poorly and with comic exaggerated gestures.

Weird...

Thanx.