So you are looking for tug toys?
I use whatever my dogs/pups like to tug with and that stand up to the tugging. So never had an age qualifier to the tug. If they used it, and it lasted, that was a tug toy for me!
MACH3 Bretta Lee Wildhaus MXG MJG MXF MFB TQX HIT CGC TC
Glory B Wildhaus AX, AXJ, XF
plus Miss Osin Blue Wildhaus
"How is it one careless match can start a forest fire, but it takes a whole box to start a campfire?." ANONYMOUS