The National Zoo in D.C.
Welcomed back visitors for the first time since November on Friday.
The zoo has safety measures in place during the pandemic, like limited capacity.
Guests age 2 and older are required to wear face coverings in all indoor spaces.
President Biden and Vice President Harris attended a wreath-laying ceremony at the Tomb of the Unknown Soldier in Arlington..
Listen to these adorable giggles as a two-year-old girl played with an Amur leopard at the Philadelphia Zoo on May 12. The toddler..
