Lower trees and understory shrubs include Calliandra peninsularis, Mimosa xanti, Heterotoma aurita, Verbesina pustulata and Hypericum peninsulare.

Above 1,600 metres (5,200 ft) in elevation, pine predominates, mixed with oaks, and with an understory of grasses (Muhlenbergia spp.

[3] Larger mammals include mule deer (Odocoileus hemionus), puma (Puma concolor), coyote (canis latrans), gray fox (Urocyon cinereoargenteus), bobcat (Lynx rufus), raccoon (Procyon lotor), ringtail (Bassariscus astutus), and western spotted skunk (Spilogale gracilis).

[5] Resident birds include the cape pygmy owl (Glaucidium hoskinsii), white-winged dove (Zenaida asiatica), acorn woodpecker (Melanerpes formicivorus), and golden eagle (Aquila chrysaetos).

Xantus's hummingbird (Basilinna xantusii), Baird's junco (Junco bairdii), the peninsular yellowthroat (Geothlypis beldingi), and the very distinct American robin subspecies Turdus migratorius confinis, by some authors considered a distinct species Turdus confinis, are endemic to the southern Baja California Peninsula.