Everett and Anna came to the Zoo in the spring of 2006. Everett is 12 years old, Anna is 6. You can easily tell them apart: Everett is larger and his left eye appears slightly enlarged and seems to view the world from a different angle than the right one. Anna has a kink in her tail about six inches from the end.
In the wild, adults lead solitary lives. However, Everett and Anna live together quite happily. In fact, they are so well bonded, they become nervous if separated for a long time. The other paired cats along the Big Cat Trail must be separated to be fed in order to reduce competition. However, the snows will eat peacefully side by side, each pausing now and then to lick the other’s head. I should add that this goes for their basic carnivore diet: a ground-beef diet with extra nutrients specially formulated for zoo carnivores. When they are given their whole-food items, like a beef shank or rack of ribs, these items are placed at opposite ends of the bedrooms. Upon separation and release from each end of the bedrooms, each cat retires to a distant location with its treat.
As one would expect of an animal native to a harsh climate, they are seasonal breeders. Since their arrival, they have bred many times. Unfortunately, no cubs have resulted. It is possible that Everett is too old. Older snow leopard males in managed care have a poor track record when it comes to siring young. We will report back to the snow leopard Species Survival Plan (SSP), which manages snow leopards across North America using complex computer programs to rank individuals genetically and makes breeding recommendations.
As I care for the different species in my care, I am interested to learn about their different mind-sets and behaviors. For example, the cougars seem very quick in both their movements and thinking; one can almost see the wheels turning. But the snows seem less engaged in their environment, somehow: quieter, gentler, more passive.
I’m told that Anna was very shy and nervous when she first arrived but has calmed greatly. Even so, she can be reluctant to shift off exhibit, often appearing to wait for Everett to shift first. And yet she’ll go through periods when she is first to leap into the bedrooms while Everett hangs back. In general, she is more food motivated than he is.
Everett sometimes makes an earnest-sounding vocalization, but one doesn’t know what it is he wants. He enjoys tactile enrichment, though, and sometimes rubs his head against the enclosure’s wire. He will then remain still while his head is scratched with a back scratcher. When Anna cycled, Everett often had little appetite; this enabled her to monopolize the whole-food items on exhibit. Sometimes, I’d give these items in the bedrooms while they were separated. One day, as I was releasing Everett, I noticed he had the remains of food on his chin. Perhaps there are other reasons why the breeding hasn’t gone so well…?
They are less interactive with toys provided for enrichment. However, scents generally result in a strong reaction, especially from Everett. We grow fresh herbs on Zoo grounds to be used as enrichment, as well as using spices or colognes. Even a handful of fresh hay will produce a strong reaction. One day I placed hay into a large plastic bowl. Everett did a face plant into the bowl, sniffing, rubbing his head, and even nibbling the hay. He lifted his head with a small pile of hay on top with a blissful look on his face.
These cats are one of my favorites. Stop by their exhibit and enjoy these beautiful and enigmatic carnivores.
Karen Barnes is a senior keeper at the San Diego Zoo. Read her previous post, Favorite Jaguar Moments.