I agree that the last one is probably P. vitticeps. The first looks to me like Iguanidae, maybe even genus Iguana, but I'm less familiar with the Agamids so I couldn't rule that out.
And knowing this and realizing it is zoo animals that's 99% is possible the id given by Mihails Pupins is correct - 1st is immature P. cocincinus and second P. vittatus.