This cheap dog toy also provides an IQ challenge. Put a piece of dog biscuit or a treat in a Propel water bottle (with no cap and the plastic retainer ring removed). Let the dog figure out how to get the snack out. I got the Propel idea from one of the posters and some free bottles from someone who likes to drink it. Use the Propel bottles because they are quite sturdy.
By Holly from Richardson, TX
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