August 7, 2017 News twinvalleyzoo Twin Valley Zoo Open on August 7, 2017 We are open on the August Civic Holiday. Come bring the family! Related Articles See you in 2016! Posted On December 1, 2015 2015 was a wonderful year and we are looking forward to seeing you again in 2016! Thank you! 4th Annual Autism “Family Day at the Zoo”, Saturday July 7th, 2018 Posted On May 23, 2018 Twin Valley Zoo is proud to host the Hamilton chapter in its 4th year of: "Family Day at the Zoo". This year's date is Saturday… Opening Day May 5th! Posted On April 10, 2018 Come join us on Saturday May 5th at 9am for our Opening day!