Can craft Lassos in Equus's inventory which can be used to reposition smaller conscious and unconscious tames into your base. Just target the KO'd Dino and ride it back to safety. Also acts as a mobile mortar and pestle.
Equus's also has a very high melee torpor modifier on right click attacks, seems to be 3-5x listed damage as torpor. A mate boosted and melee leveled Equus's can KO targets extremely quickly. I keep a male and female near my taking pen at all times.
Quick tip: I was trying to tame one at my house and it bucked me off and my other tames thought it was hurting me so they killed it. Long story short, put all your other tames on passive if you want to tame it at your house.