The city Oak Brook is spelled as one word (Oakbrook) in 4 different locations:

2 on back of cardboard package 
1 on tush tag 
1 on heart-shaped ear swing tag

Date introduced is Jan. 31, 1998, but copyright date is 1999 on back of package and 1993 on tush tag.  

Date of birth is March 17, 1997, but tush tag shows 1993