Does it matter what the observer is in the double slit experiment? Could it be anything from an ant to a dog? Has it ever been tried with a non-human observer?
When physicists say we "observe" the particle that's passing through the slit, they aren't really referring to the person who sees the electron, but rather the photon itself that interacts with the electron. Functionally, it's the photon that's doing the "observing" of the electron. Really, there would be much less confusion about this issue if physicists stopped saying "observe" and said "interact" instead. It's the interaction that causes the wavefunction to collapse.
So, no, in terms of the collapse of the electron's wavefunction, it doesn't matter what the photon goes on to strike next, whether it's a human or a camera or a dog or a tree stump. The "observation" already occurred when the photon hit the electron.