Seems to me there isna reptile show here in January and they usually have baby tegus. So my guess is its breeding season now. I had a black and white when I was young. Super chill lizard. Big though, mine was about 3.5' total pretty hefty too.
I want to wait till I get the house for it all built and all that.
Them may be from a pairing that came out late from last year's brumation or some such.
Talking with Underground they do have some of this year's Tegu's in still but not a Argaitine black and white male. I want a male so I won't over the 20years or so it's alive run into some kind of egg impaction issue. Also goto love the chubby cheeks the males get!