This got me curious.

I did a little (about an hour's worth) research into it.  I found lots 
of information about home experiments/projects to make glue out of 
casein/milk.

I found nothing on any commercial producer that indicated that they use 
casein or any other milk product in their glues.

I found a few sites that supported animal rights that claimed that "many 
glues contain casein (a milk derivative) and other animal products" 
(this quotation is typical of what I found), but never offered any 
proofs or citations or anything to back up (at least) the casein 
statement.  From what I can see the claim of other animal 
products/byproducts is probably valid at the commercial level, but not 
the casein/milk.

Of course, I'm still not going to eat of them   . . .



Susan Gallant wrote:
> I was reading a science book with my kids a few days ago and when we got to the page about glue it said some glues are made with milk. 
>