Safari Baby Shower Invitations, Jungle Animal Theme, Printable Invite for Boy or Girl Birthday too on Etsy, $12.49
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Fun Animal Birthday Cake: Let's roar! Baby animal themes are very popular to celebrate a child's first (or second) birthday party. Make your party unforgettable with a showstopping cake like this fondant embellished animal birthday cake. Source: Pink Cake Box
This would be a good way to incorporate the other "colors" in the theme while also having the lion and the "1"