(Portland, OR) -- The Oregon Zoo has special offers this week. Through November 9th, tickets are 13 dollars, which is half-off the regular price. Federal employees can also get in for free with up to four family members. They need to show valid photo ID and federal ID. Guests who haven't been to the zoo in a while have a chance to see new arrivals like rescued cougar cubs Nova and Link along with nine-month-old Asian elephant Tula-Tu.