Presently, the longest-tenured player on the Houston Texans roster is kicker Ka'imi Fairbairn, who has been on the team since April 30, 2016. But if we zoom out and change our search criteria to account for both players AND mascots, well, then Toro has been in Houston longer than anyone else.
It may seem like an exaggeration to say so, but it's not a stretch to say that Toro has become an invaluable member of the Houston Texans organization over the last 11 years. Hell, we named our Texans website here at FanSided after him, which as trivial as it may seem, is also not insignificant.